Math, asked by Badboy18533, 9 months ago

9(2a-b)^2-4(2a-b)-13

Answers

Answered by kuldeep9955

2

Step-by-step explanation:

in second step 9(2a-b)^2 becomes 9(4a+b)

in first it was - but in next it become + because

it was ^2, so -1×-1=2

HOPE IT HELPS!!!

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