Answer:
Explanation:
How to solve your problem
2
+
9
=
0
Quadratic formula
1
Use the quadratic formula
=
−
±
2
−
4
√
2
x=\frac{-{\color{#e8710a}{b}} \pm \sqrt{{\color{#e8710a}{b}}^{2}-4{\color{#c92786}{a}}{\color{#129eaf}{c}}}}{2{\color{#c92786}{a}}}
x=2a−b±b2−4ac
Once in standard form, identify a, b, and c from the original equation and plug them into the quadratic formula.
2
+
9
=
0
x^{2}+9=0
x2+9=0
=
1
a={\color{#c92786}{1}}
a=1
=
0
b={\color{#e8710a}{0}}
b=0
=
9
c={\color{#129eaf}{9}}
c=9
=
−
0
±
0
2
−
4
⋅
1
⋅
9
√
2
⋅
1