Question

Given the equation 6x squared-y=98 , find x if y = –2.

Answer 1

Plug-in (replace) y with its value -2.

Answer 2

(That's the first step)

Answer 3

\[6x^2-y=98\]
\[6x^2-(-2)=98\]
\[6x^2+2=98\]

Answer 4

1. Subtract 2 from both sides.
2. Divide both sides by 6
3. Take the square root of both sides and remember that each number has two square roots...a positive one and a negative one.

Answer 5

After the third step, what's the answer? I'm still confused.

Answer 6

There will be two answers for x. One will be positive and the other, negative.

Answer 7

Show me your 3rd step.

Answer 8

What did you have after you divided both sides by 6?

Answer 9

6x squared = 96

Answer 10

then what

Answer 11

Divide both sides by 6

Answer 12

1. Subtract 2 from both sides.
2. Divide both sides by 6

Answer 13

6x/6= 96/6?

Answer 14

yes

Answer 15

thats what i divide

Answer 16

okay.

Answer 17

\[\frac{6x^2}{6}=\frac{96}{6}\]

Answer 18

in that case, 96 divided by six is 16? So, x=16?

Answer 19

squared?