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Can someone answer my question? For all x, (3x+7) ^2=?
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Can someone answer my question? For all x, (3x+7) ^2=?

User Val Schuman
by
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1 Answer

12 votes


\\ \tt\longmapsto (3x+7)^2

  • (a+b)^2=a^2+2ab+b^2[/tex]


\\ \tt\longmapsto (3x)^2+2(3x)(7)+(7)^2


\\ \tt\longmapsto 9x^2+42x+49

Done

User IND
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