Factorise the following expression: x^2-1

(x+1)(x-1)

NT

Related Maths GCSE answers

All answers ▸

Rearranging Formulae


There are 13 counters in a bag. 4 counters are red, the rest are blue. Alice takes 2 counters without replacing them. What is the probability that both counters are the same colour?


Show that the function f(x) = x^2 + 2x + 2 is always positive for real values of x


Find ∫(4x - 2/(x^3)) dx