Which is a solution of the equation x^2=8 a.4 or b. square root of 8?

Square root of 8 because x^2 or x² needs to be isolated with the square root (since it cancels out the exponent) instead of dividing by 2 to get 4.

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,