Calculate 27^(-3/2)

The question asks you to calculate 27-3/2.
Due to the presence of the negative sign, 27-3/2 is the same as 1/273/2.
The fractional power is a little more tricky.
The denominator, 2, means that the number must be rooted and the numerator, 3, means that the whole value must be cubed. The answer then follows as 1 divided by the value calculated.

RM

Related Maths GCSE answers

All answers ▸

2/(y+4) + 3(y-2)


For all values of x, f(x) = (x + 1)^2 and g(x) = 2(x-1). Show that gf(x) = 2x(x + 2) and find g^-1(7)


A is the point with coordinates (5, 9). B is the point with coordinates (d, 15). The gradient of the line AB is 3. Work out the value of d.


How to find the longest side of a right-angled triangle if we are given the two other sides?