Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Solve the equation
x
2
+
3
x
−
18
=
2
x
2
−
7
x
−
6
x^{2}+3x-18=2x^{2}-7x-6
x
2
+
3
x
−
18
=
2
x
2
−
7
x
−
6
. a)
x
=
6
or
x
=
4
x=6\text{ or }x=4
x
=
6
or
x
=
4
b)
x
=
5
+
13
or
x
=
5
−
13
x=5+\sqrt{13}\text{ or }x=5-\sqrt{13}
x
=
5
+
13
or
x
=
5
−
13
c)
x
=
3
or
x
=
−
6
x=3\text{ or }x=-6
x
=
3
or
x
=
−
6
d)
x
=
4
or
x
=
3
x=4\text{ or }x=3
x
=
4
or
x
=
3
Browse the problem library