Math

4x^2 -38x+84=0

Asked by AnneS2 on 21 Apr 01:58

Last updated by anonymous on 22 Apr 21:38

1 Answers

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Answered by CherieS on 22 Apr 21:38

4x^2 -38x+84=0

2(2x^2-19x+42)

2 (x )(2x ) ( -6)(x -7)

2(x-6)(2x-7)

Solve:

2(x-6)=0

2(x) (2)(-6)=0

2x-12=0

2x-12+12=0+12

2x=12

2x/2=12/2

x=6

Solve:

2(2x-7)=0

2(2x) (2)(-7)=0

4x-14=0

4x-14+14=0+14

4x=14

4x/4=14/4

x=14/4 =7/2