Question

A._(2x + 5) al cuadrado
B._(x - 7)(x + 7)
C._(x + 4)(x - 9)
D._(x + 8)(x al cuadrado - 8x +64)
E._(x - 3) al cubo

Answer 1

Explicación paso a paso:

A) (2x+5)² = 4x²+10x+10x+25 = 4x²+20x+25

B) (x-7)(x+7) = x² + 7x - 7x + 49 = x²+49

C) (x+4)(x-9) = x²-9x+4x-36 = x²-5x-36

D) (x+8)(x²-8x+54) = x³-8x²+54x+8x²-64x+432

= x³-10x+432

E) (x-3)³ = (x-3)²(x-3)

= (x²-3x-3x+9)(x-3)

= (x²-6x+9)(x-3)

= x³-6x²+9x-3x²+18x-27

= x³-9x²+27x-27