Math, asked by AdorableAstronaut, 11 months ago

Hallo guys!

It's your girl Sammie..XD

 \textbf{(3x + 7)whole \: square - 84x = 3x - 7 \: whole \: square}

Answers

Answered by UnknownDude
7
[0010001111]... Hello Sammie... [1001010101]
Here's your answer...

(3x+7)²-84x
= (3x)² + 2×3x×7 + 7² - 84x
= 9x² + 49 + 42x - 84x
= 9x² + 49 - 42x
= (3x)² + 2×3x×(-7) + (-7)²
= (3x-7)²

Hence proved

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Answered by Anonymous
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