Math, asked by blehsmiles, 25 days ago

expand the following using suitable indentities (4× -7 by 2 y) ²

pls give the formula step by step​

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Answers

Answered by ksbadarry
1

Step-by-step explanation:

(4x - 7y/2)² = (4x)²-2(4x)(7y/2)+(7y/2)²

[ using identity (a-b)²=a²-2ab+b²]

=16x² - 28xy + 49y²/4

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