Math, asked by jagriti8jiwanshu, 8 months ago

31. 9 (2a - b)2 - 4(2a-b )1-13

Answers

Answered by appayyanakka

2

Answer:

=28a-14b-13

Step-by-step explanation:

=9(2a-b)2-4(2a-b)1-13

=36a-18b-8a+4b-13

=28a-14b-13

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