Question

Evaluate :- (3x+7)(3x-7)​

Answer 1

Step-by-step explanation:

explation is in picture

Answer 2

$\sf \bf \huge {\boxed {\mathbb {QUESTION}}}$

Evaluate :-

$\sf \bf (3x+7)(3x-7)$

$\sf \bf \huge {\boxed {\mathbb {ANSWER}}}$

$\sf \bf \implies (3x+7)(3x-7)$

$\sf \bf {Identity =\\(a+b) (a-b) ={a}^{2}-{b}^{2}}$

$\sf \bf \implies (3x+7)(3x-7) ={3x}^{2}-{7}^{2}$

$\sf \bf \implies (3x+7)(3x-7) =9{x}^{2}-49$

$\sf \bf \implies {\boxed {\boxed {\sf \bf 9{x}^{2}-49}}}$

$\sf \bf \huge {\boxed {\mathbb {HOPE\:IT \:HELPS \:YOU}}}$

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$\sf \bf \huge {\boxed {\mathbb {EXTRA\:INFORMATION}}}$

$\sf \bf {Identities}$

$\sf \bf {(a+b)}^{2}={a}^{2}+2ab+{b}^{2}$

$\sf \bf {(a-b)}^{2}={a}^{2}-2ab+{b}^{2}$

$\sf \bf (a+b) (a-b) ={a}^{2}-{b}^{2}$

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