Question

Divide x(5x² – 80) by 5x(x + 4)​

Answer 1

Answer:

x-4

Step-by-step explanation:

1. Multiply/expand the first term to

  $x^{3}-80x$

2. re factorize it to

$5x(x^{2} -16)$

3. cancel out 5x in both the terms to get

 $\frac{x^{2} - 16}{x+4}$

4. use identity$a^{2}-b^{2}=(a+b)(a-b)$ to get

(x+4)(x-4)

5. cancel out x+4 to get x-4 as the answer