Question 149587
20x(3-2x)= {{{60x-40x^2}}} -----> what's wrong with this? parentheses is gone
Continuing to solve for "x", becomes
{{{40x^2-60x=0}}} ------------> working eqn
{{{10x(4x-6)=0}}}
{{{(cross(10x)(4x-6))/cross(10x) = cross(0/10x)*0}}}
{{{4x-6=0}}}
{{{x=6/4}}} --------> final answer for value of "x"
To check, go back to our working eqn,
{{{40(6/4)^2 - 60(6/4)=0}}}
(40)(2 1/4) - (360/4)=0
{{{90-90=0}}}---> {{{0=0}}}
Thank you,
Jojo