What are the solutions of 3x2 = 18x?

x = 0, x = 6

x = 0, x = −6

x = 3, x = 6

x = 3, x = −6

Question

What are the solutions of 3x2 = 18x? 

 x = 0, x = 6 

 x = 0, x = −6 

 x = 3, x = 6 

 x = 3, x = −6

lgbasallote · Answer

subtract 18x from both sides first..what do you get?

anonymous · Answer

okay one sec

anonymous · Answer

okay wait im confused soo do the exponents first right..?

directrix · Answer

3x^2 = 18x
3x^2 - 18x = 0
Next, factor out 3x from both expressions on the left.

anonymous · Answer

soo is it x=3 and x=-6..?

directrix · Answer

Factor first.
3x^2 - 18x = 0
3x(x - 6) = 0
Then, use the Zero Product Property which states that if two factors multiply to zero, then one or both factors are equal to zero.
So,
3x = 0 or x - 6 = 0
x = 0 or x = 6 --> Answer

anonymous · Answer

ohh dang i was wrong..lol i suck and thank you soo much !

directrix · Answer

Glad to help. You just skipped a step.