Question

помогите,с объяснением​

Answer 1

$\frac{x^{2-4x+16} }{x^{2} -8x+16}*\frac{7x-28}{x^{2} +64}$

$\frac{x^{2} -4x+16}{(x-4)x^{2} } *\frac{7(x-4)}{x^{2} +64}$

$\frac{x^{2}-4x+16}{x-4} *\frac{7}{x^{2}+64 }$

$\frac{7(x^{2}-4x+16)}{(x-4)*(x^{2}+64)}$

$\frac{7x^{2}-28x+112}{x^{3}+64x-4x^{2}-256 }$

$\frac{7x^{2}-28x+112 }{x^{3}-4x^{2} +64x-256 }$