Question

Ayudenme con etos ejercicios (x+2) (a+b+c) , (x-y) (x+y) , 2x(a+b+c) , (2xal cuadrado -x+3)(x-2) (xalcuadrado- x-2)(-x-2) , (xalcuadrado+2x-1) (2x-3)

Answer 1

(x+2) (a+b+c)= ax+bx+cx+2a+2b+2c
(x-y) (x+y)= x²+xy-xy-y²=x²-y²
2x(a+b+c)= 2ax+2bx+2cx
(2x²-x+3)(x-2) = 2x³-x²+3x-4x²+2x-6 = 2x³-5x²+5x-6
(x²- x-2)(-x-2) = -x³+x²+2x-2x²+2x+4=x³-x²+4x+4
(x²+2x-1) (2x-3) = 2x³+4x²-2x-3x²-6x+3 = 2x³+x²-8x+3