Question

using identity find (3p-7q) ^2​

Answer 1

Question :-

Using identity find :-

$\blue \maltese \: \bf \red{ {(3p - 7q)}^{2} }$

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Solution :-

Identity Used :-

$\red \maltese \: \boxed{\bf \orange{ {p - q}^{2} = {p}^{2} - 2pq + {q}^{2} }}$

To Find :-

$\blue \maltese \: \bf \red{ {(3p - 7q)}^{2} }$

Calculation :-

$\bf{ {(3p - 7q)}^{2} }$

$\red \implies \small\bf \blue{{(3p - 7p)}^{2} = {3p}^{2} - 2 \times 3p \times 7q + {7q}^{2} }$

$\red \implies \bf \blue { {(3p - 7q)}^{2} = {9p}^{2} - 42pq + {49q}^{2} }$

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Final Answer :-

$\red \maltese \: \bf \purple { {9p}^{2} - 42pq + {49q}^{2} }$

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Answer 2

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Question ⤵

Using identity find :-

$\bf \pink{{ (3p-7q) ^2}}$

Solution :-

Identity Used :-

$\red \maltese \: \boxed{\bf \orange{ {p - q}^{2} = {p}^{2} - 2pq + {q}^{2} }}$

To Find :-

$\blue \maltese \: \bf \red{ {(3p - 7q)}^{2} }$

Calculation :-

$\bf{ {(3p - 7q)}^{2} }$

$\bf \red{{(3p - 7p)}^{2} = {3p}^{2} - 2 \times 3p \times 7q + {7q}^{2} }$

$\bf\red{{(3p−7q) 2 =9p 2 −42pq+49q 2}}$

Final Answer :-

$\green\maltese \: \bf \pink { {9p}^{2} - 42pq + {49q}^{2} }$

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$\huge\fbox\green{Thank you :)}$