Math

x^2 + 7x -18 = 0 Solve by factoring

Asked by AnneS2 on 07 Apr 07:03

Last updated by anonymous on 08 Apr 12:24

1 Answers

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Answered by CherieS on 08 Apr 12:24

x^2 + 7x -18 = 0

(x )(x ) ( -2)( +9)

(x-2)(x+9)

Check:

(x-2)(x+9)

(x)(x) (x)(+9) (-2)(x) (-2)(9)

x^2 +9x -2x -18

x^2 +7x -18

Simplify:

(x-2)

Solve:

(x-2)=0

x-2+2=0+2

x=2

Simplify:

(x+9)

Solve:

(x+9)=9

x+9-9=0-9

x=-9