Question

What is the value of y?

6y2 + 5 = 221

Answer 1

Is that 6y squared? (little 2)

Answer 2

yes

Answer 3

y=6, -6

Answer 4

it has this sign by it ±

Answer 5

that is read "plus or minus"

Answer 6

it means two answers that have opposite signs

Answer 7

oh ok

Answer 8

6y^2+5-5=221-5
6y^2=216
6y^2/6=216/6
y^2=36
39 square root
y=6
positive 6 (+6)

Answer 9

http://en.wikipedia.org/wiki/Plus-minus_sign

Answer 10

thx

Answer 11

thx for asking :)

Answer 12

Solve the equation. If necessary, round your answer to the nearest tenth.

x2 = 256

Answer 13

square root of 256 will be x

Answer 14

thx

Answer 15

No problem :)