Question

19. Simplify the expression 2(a² + ab) - ab and find its value if a = 5 and b = 2.​

Answer 1

I hope this will help you.

Answer 2

Answer:

$70$

Step-by-step explanation:

$a = 5 \: \: \: b = 2 \\ \\ 2( {a}^{2} + ab) \\ = 2(( {5}^{2} ) + 5 \times 2) \\ = 2(25 + 10) \\ = 2 \times 35 \\ = 70$