Question

Will fan and medal

Simplify: (3a – 4b)(a + b)









A.

3a2– ab – 4b2








B.

3a2 – 7ab – 4b2








C.

3a2 – 12ab – 4b2








D.

3a2 + ab – 4b2

Answer 1

@ayeeitsme

Answer 2

First, distribute the terms

(a+b)(c+d) = ac+ad+bc+bd

Answer 3

a should be 3a^2 - ab - 4b^2

Answer 4

That's what it is @StephyDevious

Answer 5

Its A

Answer 6

meant that the answer is a, my bad.

Answer 7

after distributing you get
3a^2 + 3ab - 4ab - 4b^2
subtract 3ab - 4ab and get -1ab which is -ab