Question

Subtract -7a^2+3a-9−7a
2
+3a−9 from 5a^2-6a-45a
2
−6a−4.
Your answer should be a polynomial in standard form.

Answer 1

You will subtract these top 2
$- 7 {a}^{2} + 3a - 9 - 7 {a}^{2} + 3a - 9$

$5 {a}^{2} - 6a - 45 {a}^{2} - 6a - 4$
and this bottom one is your ANSWER

$- 12 {a}^{2} - 110a - 22$