Question

-m² + 6mn from 4m² - 2mn + 7​

Answer 1

Answer:

5m^2-8mn +7

Step-by-step explanation:

-m^2+6mn from 4m^2-2mn+7

=4m^2-2mn+7-(-m^2+6mn)

=4m^2-2mn +7+m^2-6mn

=4m^2+m^2-2mn -6mn +7

=5m^2-8mn+7