Question

2y^2-7=91

Answer 1

+- that is :)

Answer 2

try that again...

Answer 3

y = \(\pm \sqrt{{98\over2}}\)

Answer 4

+- 7

Answer 5

what does that other one say y=+-(sqrt) of what

Answer 6

y = +- sqrt(98/2)

Answer 7

k thanks

Answer 8

how did you get 98

Answer 9

84 + 7

Answer 10

Add seven from both sides so now you have 2y^2=98. Divide both sides by 2 and get y^2=49. Square root both sides and get 7.