Go!
1
2
3
4
5
6
7
8
9
0
x
y
(◻)
◻/◻
2

e
π
ln
log
lim
d/dx
d/dx
>
<
>=
<=
sin
cos
tan
cot
sec
csc

asin
acos
atan
acot
asec
acsc

sinh
cosh
tanh
coth
sech
csch

asinh
acosh
atanh
acoth
asech
acsch

Solve the inequality -2x-15+x^2<0

Videos

$-3<x<5$

Step-by-step explanation

Problem

${x^2-2x-15}<{0}$
1

To find the roots of a polynomial of the form $ax^2+bx+c$ we use the quadratic formula, where $a=1$, $b=-2$ and $c=-15$

$x =\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$-3<x<5$