solve by formula method 5x2 + 9x +4 =0
Answers
Answered by
1
Answer:
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.
5
2
+
9
+
4
=
0
5x^{2}+9x+4=0
5x2+9x+4=0
=
5
a={\color{#c92786}{5}}
a=5
=
9
b={\color{#e8710a}{9}}
b=9
=
4
c={\color{#129eaf}{4}}
c=4
=
−
9
±
9
2
−
4
⋅
5
⋅
4
√
2
⋅
5
x=\frac{-{\color{#e8710a}{9}} \pm \sqrt{{\color{#e8710a}{9}}^{2}-4 \cdot {\color{#c92786}{5}} \cdot {\color{#129eaf}{4}}}}{2 \cdot {\color{#c92786}{5}}}
x=2⋅5−9±92−4⋅5⋅4
2
Answered by
0
Answer:
5
2
+
9
+
4
=
0
5x^{2}+{\color{#c92786}{9x}}+4=0
5x2+9x+4=0
5
2
+
5
+
4
+
4
=
0
Step-by-step explanation:
thanks my answer
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