Math, asked by pushti6, 1 year ago

Expand : (2x -7)
(2x -  {7)}^{2}

Answers

Answered by TRISHNADEVI
4
HERE IS YOUR ANSWER..⬇⬇

\underline{SOLUTION}

We \: \: know \: \: that \:, \\ \\ (a - b) {}^{2} = a {}^{2} - 2ab + b {}^{2} \\ \\ By \: \: using \: this \: \: identy ,\: \: \\ \\ \\ (2x - 7) {}^{2} \\ \\ = (2x) {}^{2} - 2 \times 2x \times 7 + (7) {}^{2} \\ \\ = 4x {}^{2} - 28x + 49

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pushti6: thanks thanks a lot
TRISHNADEVI: wc
Answered by sainq
2
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[Tex]\huge\star\Color{Blue}{Hello Mate}[/Tex]

[Tex]\Underline\Italic{Solution}[/Tex]

We know that,

1.(a - b){2} = a {2} - 2ab + b {2} \\<br /><br /> by \: this \\ \<br /><br />\ (2x - 7){2} \\ <br /><br />= &gt; (2x) {2} - 2 \times 2x \times 7 + (7) {2} \\ <br /><br />= &gt; (4x){2} - 28x + 49
Thanks
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