Question

subtract 3a²-4ab + 7 from -9ab-2-7a²-8b​

Answer 1

Answer:

$- 5ab - 8 - 10 {a}^{2} - 8b$

Answer 2

Step-by-step explanation:

Distribute the Negative Sign:

=3a2−4ab+7+−1((−9a)(b)−2−7a2−8b)

=3a2+−4ab+7+−1((−9a)(b))+(−1)(−2)+−1(−7a2)+−1(−8b)

=3a2+−4ab+7+9ab+2+7a2+8b

Combine Like Terms:

=3a2+−4ab+7+9ab+2+7a2+8b

=(3a2+7a2)+(−4ab+9ab)+(8b)+(7+2)

=10a2+5ab+8b+9

Answer:

=10a2+5ab+8b+9