Question

plzz multiply this............... .........

Answer 1

Step-by-step explanation:

(x-7) (x-9)

x(x-9)-7(x-9)

x^2-9x-7x+63

x^2-2x+63

Answer 2

Hey mate here is your answer..

3.

${x}^{2} - 9x - 7x - 63 \\ = {x }^{2} - 16x - 63$

4.

${x}^{4} - 6 {x}^{2} + 5 {x }^{2} - 30 \\ = {x}^{4} - x - 30$

Hope it helps..

Tq.

:)

mark it as brainliest...