Question

reporto quien no me responda bien​

Answer 1

Respuesta:

1) 16x²-26x-12

2) 28$x^{4}$+49x³-32x²-12x

3) 72$x^{5}$-43$x^{4}$+98x³-69x²+43x-20

4) 42$x^{6}$+35$x^{5}$-18x²-15x

5) 24$x^{6}$-50$x^{5}$+55$x^{4}$-26x³+47x²-39x-21

Explicación paso a paso:

1)

(2x-4)(8x+3) = 16x²+6x-32x-12 = 16x²-26x-12

2)

(4x²+5x-6)(7x²+2x) = 28$x^{4}$+35x³-42x²+14x³+10x²-12x = 28$x^{4}$+49x³-32x²-12x

3)

(9x³-2x²+7x-5)(8x²-3x+4) = 72$x^{5}$-16$x^{4}$+56x³-40x²-27$x^{4}$+6x³-21x²+15x+36x³-8x²+28x-20 = 72$x^{5}$-43$x^{4}$+98x³-69x²+43x-20

4)

(7$x^{5}$-3x)(6x+5) = 42$x^{6}$+35$x^{5}$-18x²-15x

5)

(3$x^{4}$-4x³+5x²-x+7)(8x²-6x-3) = 24$x^{6}$-32$x^{5}$+40$x^{4}$-8x³+56x²-18$x^{5}$+24$x^{4}$-30x³+6x²-42x-9$x^{4}$+12x³-15x²+3x-21 = 24$x^{6}$-50$x^{5}$+55$x^{4}$-26x³+47x²-39x-21