Question

(4x-3) totul la a doua +(3x+2) totul la a doua -(5x-4) totul la a doua 
(x-1)(x+4)-(x+2)(x-2)
(3x+5)(3x-5)+(5x+6) totul la a doua -(x+5)(x-5)
Urgent , Dau Funda !

Answer 1

sper ca te'am ajutat

$- (x + 5)(x - 5) = - ( {x}^{2} - 25) = - {x}^{2} + 25$