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4 votes
Solve for x:
(x -3)(x +5) = 9

User Bigreddot
by
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1 Answer

3 votes


▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

let's solve for x :


  • (x - 3)(x + 5) = 9


  • {x}^(2) + 5x - 3x - 15 = 9


  • {x}^(2) + 2x - 15 - 9 = 0


  • {x}^(2) + 2x - 24 = 0


  • {x}^(2) + 6x - 4x - 24 = 0


  • x(x + 6) - 4(x + 6) = 0


  • (x + 6)(x - 4) = 0

so,


  • x = - 6

or


  • x = 4
User Harold Chan
by
8.8k points

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