Question

Solve using quadratic formula method √ x 2 + 7 x + 5 √ = 0

Answer 1

Answer:

Explanation:

x^2-7x-5=0

x

2

−

7

x

−

5

=

0

Quadratic formula is

x=[-b+-sqrt(b^2-4ac)]/(2a)

x

=

−

b

±

√

b

2

−

4

a

c

2

a

Values given a=1, b=-7, c=-5

a

=

1

,

b

=

−

7

,

c

=

−

5

x=[-(-7)+-sqrt((-7)^2-4xx1xx(-5))]/(2xx1)

x

=

−

(

−

7

)

±

√

(

−

7

)

2

−

4

×

1

×

(

−

5

)

2

×

1

x=[7+-sqrt(49+20)]/2

x

=

7

±

√

49

+

20

2

x=[7+-sqrt(69)]/2

x

=

7

±

√

69

2

x=[7+sqrt(69)]/2 and x=[7-sqrt(69)]/2

x

=

7

+

√

69

2

and

x

=

7

−

√

69

2