Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
too many equal signs
OpenStudy (misty1212):
HI!!
OpenStudy (misty1212):
is it
\[3x^2-2x=2x+7\]?
OpenStudy (anonymous):
3x2 - 2x = 2x + 7 ⇒ x=2.333 , x=-1 am I right
OpenStudy (anonymous):
no
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
wat did I do wrong
OpenStudy (anonymous):
\[\frac{7}{3}\neq 2.333\]
OpenStudy (anonymous):
@misty1212 the problem is 3x^2-2x=2x+7
OpenStudy (misty1212):
subtract \(2x+7\) from both sides to set it equal to zero, and solve\[3x^2-4x-7=0\] by factoring
OpenStudy (misty1212):
i am bad at factoring, but i think it factors as
\[(3x-7)(x+1)=0\]
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (misty1212):
as a matter of fact, i am sure it does
OpenStudy (anonymous):
yes the answers are right because my teacher gives us the answers but we have to show the work and she doesn't really teach us so i never know who to do the homework
OpenStudy (misty1212):
are you asking how to factor it?
OpenStudy (wolf1728):
Were you taught to use the quadratic formula?
OpenStudy (misty1212):
or how to solve ?
once you have
\[(3x-7)(x+1)=0\] set each factor equal to zero and solve for \(x\)
so
\[x+1=0\\
x=-1\] and
\[3x-7=0\\
3x=7\\
x=\frac{7}{3}\]
Still Need Help?
Join the QuestionCove community and study together with friends!