Question

17. Find the roots of equation x2-5x-6=0.​

Answer 1

Answer:

Done below

Step-by-step explanation:

The roots are x=2 and x=3 .

Answer 2

Answer:

=

−

±

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

−

5

−

6

=

0

x^{2}-5x-6=0

x2−5x−6=0

=

1

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

a=1

=

−

5

b={\color{#e8710a}{-5}}

b=−5

=

−

6

c={\color{#129eaf}{-6}}

c=−6

=

−

(

−

5

)

±

(

−

5

)

2

−

4

⋅

1

(

−

6

)

√