sqrt(18) = sqrt(9*2)= sqrt(9)*sqrt(2) = +/-3sqrt(2)
-3sqrt(2) - 7sqrt(18) = -3sqrt(2) -/+7*3sqrt(2) = -3sqrt(2) -/+21sqrt(2)
= -24sqrt(2) or 18sqrt(2).
Chat with our AI personalities
sqr root of 18 = 3 * square root of 2
it is 18 because when you put all the numbers back into the square root it becomes the square root of 18 and the square root of 18 squared would be 18
Square root of 324 is 18 or 3 times the square root of 2
root 8 = root 4 x root 2 = 2 root 2, root 18 = root 9 x root 2 = 3 root 2; 2 root 2 x 3 root 2 = 6 x 2 = 12
As 18=2x32, sqrt(18)=sqrt(2x32)=3 sqrt(2) sqrt(18)-sqrt(2)=3 sqrt(2) - sqrt(2) = 2 sqrt(2)