How do you write 6x^2 + 4x in factored form?

2 Answers
Mar 21, 2018

color(green)(=> (sqrt6 x + 2 / sqrt6)^2 - 2/3

=> color(red)((sqrt6 x + 2/sqrt6 + sqrt(2/3)) * (sqrt6 x + 2/sqrt6 - sqrt(2/3))

Explanation:

6x^2 + 4x = 6x*2 + 4x + 4 / 6 - 4/6, " Add & Subtract 4/6"

=> (sqrt6x)^2 + 2 * (1/sqrt6) * 2 * x + (2/sqrt6)^2 - 2/3

It is in the form (a2 + 2ab + b^2) " where " a = sqrt6. b = 2 / sqrt6

Hence => (sqrt6 x + 2 / sqrt6)^2 - (sqrt(2/3))^2

It is again in the for a^2 - b^2

=> (sqrt6 x + 2/sqrt6 + sqrt(2/3)) * (sqrt6 x + 2/sqrt6 - sqrt(2/3))

Mar 21, 2018

2x(3x+2)

Explanation:

"take out a "color(blue)"common factor "2x

rArr6x^2+4x=2x(3x+2)