Question

solve by formula method 5x2 + 9x +4 =0​

Answer 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

Answer 2

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