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BÀI TẬP LÀM TRONG DỊP NGHỈ TẾT NĂM 2017 Yêu cầu: Các em làm tập vào giấy men, buổi học sau Tết nộp cho thầy chúc em làm hết tập! Bài Giaûi phương trình sau: a) 3x – = 2x – c) – 2x = 22 – 3x e) x – 12 + 4x = 25 + 2x – g) 11 + 8x – = 5x – + x b) d) f) h) – 4y + 24 + 6y = y + 27 + 3y 8x – = 5x + 12 x + 2x + 3x – 19 = 3x + – 2x + 15 = 9x + – 2x a) c) e) g) i) b) d) f) h) j) 2x(x + 2)2 – 8x2 = 2(x – 2)(x2 + 2x + 4) (x – 2)3 + (3x – 1)(3x + 1) = (x + 1)3 (x – 1)3 – x(x + 1)2 = 5x(2 – x) – 11(x + 2) (x – 3)(x + 4) – 2(3x – 2) = (x – 4)2 (x + 1)(x2 – x + 1) – 2x = x(x + 1)(x – 1) – (x – 6) = 4(3 – 2x) – (2x + 4) = – (x + 4) (x + 1)(2x – 3) = (2x – 1)(x + 5) (x – 1) – (2x – 1) = – x x(x + 3)2 – 3x = (x + 2)3 + a) 1,2 – (x – 0,8) = –2(0,9 + x) c) 2,3x – 2(0,7 + 2x) = 3,6 – 1,7x e) + 2,25x +2,6 = 2x + + 0,4x a) c) e) g) i) m) p) r) t) v) b) 3,6 – 0,5(2x + 1) = x – 0,25(2 – 4x) d) 0,1 – 2(0,5t – 0,1) = 2(t – 2,5) – 0,7 f) 5x + 3,48 – 2,35x = 5,38 – 2,9x + 10,42 5x 3x 3 13 2 x x 5 7x 16 x 2x 3x 3x 2x 4x 6x 5x 3 2x x x 15 x 2x x x 6 3x 11 x 3x 5x 11 2x 3x 9x 3x 12 b) d) f) h) k) n) q) s) u) 5x 2x x x 10 15 30 w) 5(x 1) 7x 2(2x 1) 5 2(x 3) 3x 2(x 7) c) 14 3(2x 1) 3x 2(3x 2) e) 1 10 3(x 3) 4x 10,5 3(x 1) g) 6 10 a) Bài Giải phương trình sau: 10x 8x 1 12 20x 1,5 x 5(x 9) 5x 4(0,5 1,5x) x4 x x2 x4 5x 8x 4x 5 1 (x 3) (x 1) (x 2) 2x 2x 0,5x 0,25 9x 0,7 5x 1,5 7x 1,1 5(0,4 2x) 6 x 2x 6x 2x 3 12 3x x3 2x 7x x 1 15 3(x 30) 7x 2(10x 2) 24 15 10 x 3(2x 1) 2x 3(x 1) 12x d) 12 10x f) x (2x 1) (1 2x) 17 34 2(3x 1) 2(3x 1) 3x h) 5 10 b) x ThuVienDeThi.com (2x 1)2 (x 1)2 7x 14x (x 10)(x 4) (x 4)(2 x) (x 10)(x 2) b) 15 12 2 ( x 2) (2x 3)(2x 3) (x 4) c) 0 a) Bài Giải phương trình sau: a) x x 1 2x 3x 1 3 2x 2x 3x x 1 2x 6 2 3x b) Bài Giải phương trình sau: x 23 x 23 x 23 x 23 x2 x3 x4 x5 b) 1 1 1 1 96 97 98 24 25 26 27 95 x 1 x x x 201 x 203 x 205 x c) d) 3 99 97 95 2004 2003 2002 2001 x 1 x x x x 45 x 47 x 55 x 53 e) f) 55 53 45 47 x2 x4 x6 x8 2x 1 x x g) h) 1 98 96 94 92 2002 2003 2004 2 2 x 10x 29 x 10x 27 x 10x 1971 x 10x 1973 i) 1971 1973 29 27 a) Bài Giải phương trình sau: a) c) e) g) i) (3x – 2)(4x + 5) = (4x + 2)(x2 + 1) = (x – 1)(2x + 7)(x2 + 2) = (3,5 – 7x)(0,1x + 2,3) = 15(x + 9)(x – 3) (x + 21) = b) d) f) h) j) (2,3x – 6,9)(0,1x + 2) = (2x + 7)(x – 5)(5x + 1) = (4x – 10)(24 + 5x) = (5x + 2)(x – 7) = (x2 + 1)(x2 – 4x + 4) = l) (3,3 – 11x) (3x + 2)(x2 – 1) = (9x2 – 4)(x + 1) 2x(x – 3) + 5(x – 3) = (x + 2)(3 – 4x) = x2 + 4x + 3x – 15 = 2x(x – 5) 0,5x(x – 3) = (x – 3)(1,5x – 1) x(2x – 9) = 3x(x – 5) 2x(x – 1) = x2 - b) d) f) h) j) l) x(x + 3)(x – 3) – (x + 2)(x2 – 2x + 4) = (3x – 1)(x2 + 2) = (3x – 1)(7x – 10) x(2x – 7) – 4x + 14 = (2x + 1)(3x – 2) = (5x – 8)(2x + 1) (2x2 + 1)(4x – 3) = (x – 12)(2x2 + 1) (x – 1)(5x + 3) = (3x – 8)(x – 1) x x(3x 7) 7 1 (x 1) x x 3 1 p) x x x 4 2 3x 3x r) (2x 3) 1 (x 5) 1 7x 7x 2(x 3) 4x = k) (3x – 2) a) c) e) g) i) k) m) o) q) x 2(1 x) = n) (2 – 3x)(x + 11) = (3x – 2)(2 – 5x) s) (x + 2)(x – 3)(17x2 – 17x + 8) = (x + 2)(x – 3)(x2 – 17x +33) a) c) e) g) i) k) m) (2x – 5)2 – (x + 2)2 = (x2 – 2x + 1) – = (x + 1)2 = 4(x2 – 2x + 1)2 9(x – 3)2 = 4(x + 2)2 (2x – 1)2 = 49 (2x + 7)2 = 9(x + 2)2 (x2 – 16)2 – (x – 4)2 = b) d) f) h) j) l) n) o) x 32 x 52 25 3x x 2 p) 3 3 (3x2 + 10x – 8)2 = (5x2 – 2x + 10)2 4x2 + 4x + = x2 (x2 – 9)2 – 9(x – 3)2 = (4x2 – 3x – 18)2 = (4x2 + 3x)2 (5x – 3)2 – (4x – 7)2 = 4(2x + 7)2 = 9(x + 3)2 (5x2 – 2x + 10)2 = (3x2 + 10x – 8)2 ThuVienDeThi.com GIÁO VIÊN: ĐINH BÁ SANG ... 53 45 47 x2 x4 x6 x? ?8 2x 1 x x g) h) 1 98 96 94 92 2002 2003 2004 2 2 x 10x 29 x 10x 27 x 10x 1971 x 10x 1973 i) 1971 1973 29 27 a) Bài Giải phương trình... (3x2 + 10x – 8) 2 = (5x2 – 2x + 10)2 4x2 + 4x + = x2 (x2 – 9)2 – 9(x – 3)2 = (4x2 – 3x – 18) 2 = (4x2 + 3x)2 (5x – 3)2 – (4x – 7)2 = 4(2x + 7)2 = 9(x + 3)2 (5x2 – 2x + 10)2 = (3x2 + 10x – 8) 2 ThuVienDeThi.com... 1)(7x – 10) x(2x – 7) – 4x + 14 = (2x + 1)(3x – 2) = (5x – 8) (2x + 1) (2x2 + 1)(4x – 3) = (x – 12)(2x2 + 1) (x – 1)(5x + 3) = (3x – 8) (x – 1) x x(3x 7) 7 1 (x 1) x x 3
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