Math

-1x^2 + 11x - 28 = 0 Solve for x

Asked by AnneS2 on 10 May 05:04

Last updated by anonymous on 12 May 11:50

1 Answers

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Answered by CherieS on 12 May 11:50

-1x^2 + 11x - 28 = 0

-1(x^2-11x+28)

-1(x )(x ) ( -7)( -4)=0

-1(x-7) (x-4) = 0

solve:

-1(x-7)=0

(-1)(x) (-1)(-7)=0

-1x+7=0

-1x+7-7=0-7

-1x=-7

-1x/-1=-7/-1

x=7

Solve:

-1(x-4) = 0

(-1)(x) (-1)(-4)=0

-1x+4=0

-1x+4-4=0-4

-1x=-4

-1x/-1=-4/-1

x=4