Question

Solve 2x^2 = 72
{±18}
{±36}
{±6}
{±8}

Answer 1

2x^2 = 72
x^2 = 72/2
x^2 = 36
x = ?

Answer 2

so is it division all the way?

Answer 3

when u take the square root of x u should also take the square root of the answer and .the answer is sqaure root of 36

Answer 4

ohhh ok so the square root of 36 is 6 so would the answer be {±6}?

Answer 5

yup =)

Answer 6

what does the ± symbol mean?

Answer 7

um it shows that +6 multiplied by +6 gives you 36 whereas -6 multiplied by -6 also gives you 36 =)

Answer 8

oh i see, Thanks!

Answer 9

ur welcome