Question

pls ans as much u know it's urgent

Answer 1

Answer:

1.

$\frac{ - 45 {p}^{3} }{9 {p}^{2} } \\ = \boxed {\underline{ \ \underline{5p}}}$

4.

$\frac{z(5 {z}^{2} - 80)}{5z(z - 4)} \\ = \frac{5 {z}^{3} - 80z}{5 {z}^{2} - 20z } \\ = \boxed{ \underline{ \underline {z - 4}}}$

6.

${a}^{2} - {b}^{2} = (a + b)(a - b) \\ ∴ \: \boxed{1 - {x}^{2} = (1 - x)(1 + x)}$