Question

How do you solve `3x^2=12x`?

Answer 1

`x=0" or "x=4`

Explanation:

`"rearrange into "color(blue)"standard form"`

`rArr3x^2-12x=0larrcolor(blue)"in standard form"`

`"take out a "color(blue)"common factor "3x`

`rArr3x(x-4)=0`

`"equate each factor to zero and solve for x"`

`3x=0rArrx=0`

`x-4=0rArrx=4`