x^2 - 10(x - 1) = -11

Holt McDougal Larson Algebra 1 Common Core Edition page 528 number 40

Asked by Dee Dee on 25 Mar 10:26

Last updated by anonymous on 28 Mar 11:23

Answered by CherieS on 28 Mar 11:23

x2-10x+10=-11

x2-10x+10+11=-11+11

x2-10x+21=0

(x )(x ) ( -7)( -3)=0

(x-7)(x-3)=0

Check

(x-7)(x-3)=0

(x)(x) (x)(-3) (-7)(x) (-7)(-3)=0

x2 -3x -7x +21=0

x2 -10x +21=0

Simplify

(x-7)

Solve:

(x-7)=0

x-7+7=0+7

x=7

Simplify:

(x-3)=0

Solve:

(x-3)=0

x-3+3=0+3

x=3