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find the solution set. 7x^2-5x-2=0

Sagot :

Answer:

x

=

 

b

±

b

2

4

a

c

2

a

, we get that

x

=

2

,

0.6

Explanation:

Rearrange the equation so that it becomes:

5

x

2

+

7

x

6

=

0

The quadratic formula is:

x

=

b

±

b

2

4

a

c

2

a

In our equation above,

a

=

5

b

=

7

c

=

6

Plugging these values into the quadratic equation gives:

x

=

7

±

7

2

4

(

5

)

(

6

)

2

(

5

)

x

=

7

±

49

+

120

10

x

=

7

±

169

10

x

=

7

±

13

10

x

=

2

,

0.6