Question

The roots of quadratic equation 5x²–2x – 10 = 0 are​

Answer 1

Answer:

Step-by-step explanation:

=

−

±

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

−

2

−

1

0

=

0

5x^{2}-2x-10=0

5x2−2x−10=0

=

5

a={\color{#c92786}{5}}

a=5

=

−

2

b={\color{#e8710a}{-2}}

b=−2

=

−

1

0

c={\color{#129eaf}{-10}}

c=−10

=

−

(

−

2

)

±

(

−

2

)

2

−

4

⋅

5

(

−

1

0

)

Answer 2

Step-by-step explanation:

5x²- 2x - 10 = 0

-(-2) + √( -2) ² - 4 ( 5) (-10)/ 2 ( 5 )

2 + √ 4 - 4(-50) / 10

2+ √ 4+200 / 2

2+ √204/ 2

2+14.28/2.

16.28/2

8.14

9

not sure please confirm