[tex]\bold{(x + a) ^{2} =( {x})^{2} + 2(x)(a) + ( {a})^{2} } \\ \\ \boxed{\bold\red{ = {x}^{2} + 2ax + {a}^{2} }}[/tex]
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[tex]\bold{(x + a) ^{2} =( {x})^{2} + 2(x)(a) + ( {a})^{2} } \\ \\ \boxed{\bold\red{ = {x}^{2} + 2ax + {a}^{2} }}[/tex]