Question

1. 5 (х2 + 5) = 6x2.its quadratic equation.. plz help me​

Answer 1

Given quadratic equation is 5x

2

−6x−2=0.

→x

2

−

5

6

x−

5

2

=0 (Divide on both sides by 5)

→x

2

−2(

5

3

)x+

25

9

=

25

9

+

5

2

(add (

5

3

)

2

=

25

9

on both sides)

→(x−

5

3

)

2

=

25

19

→x−

5

3

=±

25

19

(take square root on both sides)

Thus, we have x=

5

3

±

5

19

=

5

3±

19

.

Hence, the solution set is {

5

3+

19

,

5

3−

19

}.

Step-by-step explanation:

This is your answer..

Answer 2

Answer:

5(x^2 + 5) = 6x^2        ||      x = 5 , x = -5

Step-by-step explanation:

• 5(x^2 + 5) = 6x^2
• 5x^2 + 25 = 6x^2
• 5x^2 + 25 - 25 = 6x^2 - 25
• 5x^2 = 6x^2 - 25
• 5x^2 - 6x^2 = 6x^2 - 25 - 6x^2
• -x^2 = -25
• -x^2/1 = -25/1
• -x^2 = -25
• $x=\sqrt{25},\:x=-\sqrt{25}$
• x = 5, x = -5