Simplify 125 ^ -2/3
= (1/125) ^ 2/3 = (1/5) ^ 2 = 1/25 To find a number to a negative power, you invert it (flip it so that 125 becomes 1/125) To find (1/125) ^ 2/3, find the cube root of 1/125 (=1/5) and then square it (=1/25)
ER
Related Maths GCSE answers
All answers ▸find the second degree equation that passes through the points: (0,1) (2,2) (1,0)
Make y the subject of the formula. x=(6+2y)/(3-y)
Line Q goes through (0,5) and (4,7). Find the equation of Line Q in the form y = mx + c
Solve the simultaneous equations: 12x - 4y = 12 (1) and 3x + 2y = 12 (2)