Question

x² – 3x + 4; 4.x² – 2x + 7; – x2 + 52 - 2

Answer 1

Answer:

{4x}^{2} - 2x + 7

= > x^2 -3x + 28

= > x^2- (7-4)x - 28

= > x^2 - 7x +4x -28

= > x(x-7)+4(x-7)

= > (x-7)(x+4)