... +0,250,252(1,0)3(1,5)(1,0)1)(0,75)* x > - 2: − + +=+22 10( )2x xf xx liên t c trên (-2;+∞) x< - 2: f(x) = 4x + 17 liên t c trên (-∞; - 2)* T i x = - 2: + + +→ − → − → −− + ... x f(-2)= 9*+→ −( 2)lim ( )xf x= −→ −= − =( 2)lim ( ) ( 2) 9xf x f⇒ f(x) liên t c t i x = -2* y = (x – x2)(x2 + 2) = - x4 + x3 – 2x2 + 2x* y’ = - 4x3 + 3x2 – 4x...