225k views
5 votes
Solve by factoring
4x squared -12x-16=0

Solve by factoring 4x squared -12x-16=0-example-1

2 Answers

3 votes

4x^2-12x-16=0\ \ \ | put\ 4\ in\ front\ of\ the\ bracket\\\\ 4(x^2-3x-4)=0\ \ \ | write\ -3x\ as\ x-4x\\\\ 4(x^2+x-4x-4)=0\\\\4(x-4)(x+1)=0\\\\ x=4\ or\ x=-1
User Owencm
by
8.6k points
5 votes
Find the factors of -16
(2x-8)(2x+2)=0
So the factors were -8 and 2
2x(-8)= -16x | 2x(2)= 4
-16x+4=-12x
And now find the x
2x-8=0 2x+2=0
2x=8 2x=-2
X=4 X=-1
so x is equal to 4 & -1




User Arisleyda
by
8.6k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories