Question

evaluate (9a-7b) (3a-b) pls find this answer

Answer 1

27a^2-30ab+7b^2

Step-by-step explanation:

9a−7b)(3a−b) =9a(3a−b)−7b(3a−b)

=27a 2

−9ab−21ab+7b 2=

27a^2-30ab+7b^2