Question

subtract(3a)2-5b from(-7a)2-7b+5​

Answer 1

Answer:

$20a - 2b + 5$

Step-by-step explanation:

$( - 14a - 7b + 5) - (6a - 5b)$

$- 14a - 7b + 5 - 6a + 5b$

$- 14a - 6a - 7b + 5b + 5$

$20a - 2b + 5$

Answer 2

Answer:

(-46)a²+2b-5

Step-by-step explanation:

(3a²-5b)-[(-7a)²-7b+5]=

=3a²-5b-49a²+7b-5

= -46a²+2b-5