Question

Q2 multiply the following using appropriate identities 3.
$(x + 7)(x + 7)$
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Answer 1

$\Large\sf\green{answer:}$

$\bf{To~multiply:}$

$\sf{~~~~~~~~(x+7)(x+7)}$

$\bf{Identity~to~be~used:}$

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

$\sf{ : \longrightarrow (x)^{2}+2(x)(7)+(7)^{2}}$

$\sf{ : \longrightarrow {\green{\underline{\boxed{\bf x^{2}+14x+49}}}}}$