Question

Algebra
Plse answer fast

Answer 1

(3 - 7a) (3 + 4a)

3(3 + 4a) -7a(3+4a)

9 +12a -21a -28a2

9 -9a -28 a2

therefore ans id 28 a square -9a-9

Answer 2

Hey There!

(3-7a)(3+4a)

Using identity : (x+a)(x+b) = x² + (a+b)x + ab

(3-7a)(3+4a)= 3² + (-7a+4a)3 + (-7a)*(4a)

= 9 - 3a - 28a²

Here's Your Answer!