Bài tập toán cơ bản số 35

Created by T Madas Question 27 Square the following brackets = x2 + x + = y − 18 y + 81 a) ( x + 3) b) ( y − 9) c) ( a + 1) d) = a + 2a + ( k − 6) = k − 12k + 36 e) (1 + w ) = + w + w2 f) (2 − v) = − 4v + v Question 28 Square the following brackets a) (5 + x ) = 25 + 10 x + x b) (4 − b) = 16 − 8b + b c) (t + 2) = t + 4t + d) ( y − 5) = y − 10 y + 25 e) (b + ) = b + 14b + 49 f) ( c − 8) = c − 16c + 64 Created by T Madas Created by T Madas Question 29 Square the following brackets = 36 + 12k + k (3 − p ) = − p + p2 c) (8 + d ) = 64 + 16d + d d) (7 − m) = 49 − 14m + m e) ( q + 10 ) f) ( 2n − 1) a) (6 + k ) b) = q + 20q + 100 = 4n − n + Question 30 Square the following brackets = x + 12 x + = z − 12 z + = 16n + 8n + a) ( 3x + ) b) ( z − 3) c) ( 4n + 1) d) (3 p + 4) e) f) = p + 24 p + 16 ( 2k − ) = k − 8k + ( − 2n ) = 16 − 16n + 4n Created by T Madas