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Solve the quadratic equation $12-r-r^2=0$

Step-by-step Solution

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Final answer to the problem

$r=3,\:r=-4$
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Step-by-step Solution

How should I solve this problem?

  • Choose an option
  • Solve for r
  • Find the derivative using the definition
  • Solve by quadratic formula (general formula)
  • Simplify
  • Find the integral
  • Find the derivative
  • Factor
  • Factor by completing the square
  • Find the roots
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Sort the polynomial $12-r-r^2$ in descending order to handle it more easily

$-r^2-r+12=0$

Learn how to solve quadratic equations problems step by step online.

$-r^2-r+12=0$

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Learn how to solve quadratic equations problems step by step online. Solve the quadratic equation 12-r-r^2=0. Sort the polynomial 12-r-r^2 in descending order to handle it more easily. Factor the trinomial by -1 for an easier handling. Factor the trinomial -\left(r^2+r-12\right) finding two numbers that multiply to form -12 and added form 1. Thus.

Final answer to the problem

$r=3,\:r=-4$

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Function Plot

Plotting: $12-r-r^2$

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Answer Assistant

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Go!
1
2
3
4
5
6
7
8
9
0
a
b
c
d
f
g
m
n
u
v
w
x
y
z
.
(◻)
+
-
×
◻/◻
/
÷
2

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

asin
acos
atan
acot
asec
acsc

sinh
cosh
tanh
coth
sech
csch

asinh
acosh
atanh
acoth
asech
acsch

How to improve your answer:

Main Topic: Quadratic Equations

The quadratic equations (or second degree equations) are those equations where the greatest exponent to which the unknown is raised is the exponent 2.

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