Work out 2^3 + 4^2

When a number is raised to a power, that means the number is multiplied by itself. The power (the small number) shows how many times we need to multiply the big number by itself. Therefore: 2^3 can be split into 222 (2 multiplied by itself three times) 4^2 can be split into 44 (4 multiplied by itself twice) 222 + 44 = 8 + 16 = 24

FM

Related Maths GCSE answers

All answers ▸

A particle P of mass 0.4 kg is moving under the action of a constant force F newtons. Initially the velocity of P is (6i – 27j) m s−1 and 4 s later the velocity of P is (−14i + 21j) m s−1 . Find, in terms of i and j, the acceleration of P.


How do I find the equation of a line that is perpendicular to another line?


A right-angled triangle has an angle of 30 degrees and its hypotenuse has a length of 9cm. Find the length of either of the triangle's other two sides.


How to solve a quadratic by factorisation?