Răspuns:
(3x+7)(2x+5)= 6x la adoua+15x+14x +35= 6x la a doua =29x + 35
(4x-3)(x-5)=4x la a doua -20x-3x-15 = 4x la a doua -23x - 15
(2x-1 )(4-3x) = 8x-6x la a doua - 4-3x = 4x - 6x la a doua - 4
(5x+6)(3x-7)=15x la a doua +35x+ 18x-42 = 15x la a doua +17x-42
Explicație pas cu pas:
