49x^2 - 168x + 144 = 0 solve by factoring

Asked by AnneS2 on 01 Apr 05:02

Last updated by anonymous on 03 Apr 20:04

Answered by CherieS on 03 Apr 20:04

49x^2 - 168x + 144 = 0

(7x )(7x ) ( -12)( -12)

(7x-12)(7x-12)=(7x-12)^2

Check:

(7x-12)(7x-12)

(7x)(7x) (7x)(-12) (-12)(7x) (-12)(-12)

49x^2 -84x -84x +144

49x^2 -168x +144

Simplify:

7x-12=0

Solve:

7x-12=0

7x-12+12=0+12

7x=12

7x/7=12/7

x=12/7