Question

I need the answer?!?

Answer 1

Answer: 8.8

Step-by-step explanation:

The x term 6x has coefficient 6.

Cut that coefficient in half to get 3.

Then square the 3 to get 3^2 = 9.

We need to add 9 to both sides to complete the square.

So we'd have these steps

`x^2+6x = 130\\\\ x^2+6x+9 = 130+9\\\\ (x+3)^2 = 139\\\\ x+3 = √(139) \ \ \text{ focusing on the positive root only}\\\\ x = -3+√(139)\\\\ x \approx 8.789826\\\\ x \approx 8.8\\\\`

Answer 2

i think the answer is 15

Step-by-step explanation:

Use the formula

(

b

2

)

2

in order to create a new term. Solve for

x

by using this term to complete the square.

Exact Form:

x

=

±

√

139

+

3

Decimal Form:

x

=

14.78982612

…

,

−

8.78982612

…