How do you factor 18x^2=8?
2 Answers
Apr 24, 2018
x=
Explanation:
x=
Apr 24, 2018
Explanation:
"rearrange into "color(blue)"standard form"
rArr18x^2-8=0larrcolor(blue)"in standard form"
"take out a "color(blue)"common factor "2
rArr2(9x^2-4)=0
9x^2-4" is a "color(blue)"difference of squares"
•color(white)(x)a^2-b^2=(a-b)(a+b)
9x^2=(3x)^2rArra=3x" and "4=(2)^2rArrb=2
rArr9x^2-4=(3x-2)(3x+2)
rArr2(3x-2)(3x+2)=0larrcolor(red)"in factored form"