Question

find the product s of (x+3)(x-3)​

Answer 1

Answer:

x= -3 , x= +3

Hope it helps.

Answer 2

$\large\sf\underline{Given:}$

• $\sf\:(x+3)(x-3)$

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$\large\sf\underline{To\:find:}$

• The product of the given expression.

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$\large\sf\underline{Solution:}$

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$\dag\:\underline{\sf First\:method\::}$

$\sf\:(x+3)(x-3)$

$\sf\implies\:x(x-3)+3(x-3)$

$\sf\implies\:x^{2}-3x+3x-9$

$\sf\implies\:x^{2}\cancel{-3x}\:\cancel{+3x}\:-9$

${\sf{{\purple{\implies\:x^{2}-9}}}}$

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$\dag\:\underline{\sf 2^{nd}\:method\::}$

• Let's use identity and solve‎

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Identity to be used :

$\large{\mathfrak{\implies\:a^{2}-b^{2}=(a+b)(a-b)}}$

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In our case :

• a = x

• b = 3

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$\sf\:(x+3)(x-3)$

$\sf\implies\:x^{2}-3^{2}$

${\sf{{\purple{\implies\:x^{2}-9}}}}$

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!! Hope it helps !!