Question

5( 3a + b )² + 6( 3a + b) - 8
ANSWERS IN STEPS
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Answer 1

Answer:

(15a+5b)2+18a+6b-8

30a+10b+18a+6b-8

30a-18a+6b-10b-8

12a-4b-8

Answer 2

Step-by-step explanation:

let (3a+b)=x

so,

$5 {x}^{2} + 6x - 8 \\ = 5 {x}^{2} + 10x - 4x - 8 \\ = 5x(2x + 2) - 2( 2x + 2) \\ = (2x + 2)(5x - 2) \\ = (2(3a + b) + 2)(5(3a + b) - 2) \\ = (6a + 2b + 2)(15a + 5b - 2)$

HOPE it helps you