Question

Solve x^2 - 13x +42=0​

Answer 1

Answer:

I don't know but please rate my answer

Answer 2

Step-by-step explanation:

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

−

1

3

+

4

2

=

0

x^{2}-13x+42=0

x2−13x+42=0

=

1

a={\color{#c92786}{1}}

a=1

=

−

1

3

b={\color{#e8710a}{-13}}

b=−13

=

4

2

c={\color{#129eaf}{42}}

c=42

=

−

(

−

1

3

)

±

(

−

1

3

)

2

−

4

⋅

1

⋅

4

2

√

2

⋅

1