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 ▸

Factorise x^2 -7x+10, and hence solve x^2-7x+10=0


Why is completing the square useful and how do you do it?


Solve the following simultaneous equations: 3x - y = 1, 2x + 2y = 2


What is the difference between LCM and HCF?