Question

Efectuati calculele
a) [3(x-2)-2(x-1)]
b) [x(x+3)-x(x+2)+5]​

Answer 1

a) [3(x-2)-2(x-1)]•[x(x+3)-x(x+2)+5] =
(3x-6-2x+2)(x²+3x-x²-2x)=x(x-4)

b) (3x+2)(x-1)-(3x⁴-x³+5x²):x² =
(3x²-3x+2x-2)-x²(3x²-x+5):x²=
(3x²-x-2)(3x²-x+5)

Sper ca te-am ajutat!:)