Why do square roots have more than 1 solution?

As 3 2 is equivalent to (-3)2 it follows that the square root of 9 must be + or -3.

MH

Related Maths GCSE answers

All answers ▸

solve: x^2= 4(x-3)^2


Write 7/8 as a decimal


Find the exact value of the gradient of the curve y=e^(2-x)ln(3x-2) at the point on the curve where x=2.


Make x the subject of the formula y = x/3 -2a