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There are two obvious approaches here: 1. Solve the equation x 2 - 2x + 2 = 0 to find A and B and then calculate the required values. 2. Or we can use the quicker method of analysing what it means for the ex...

The movement of a substance from an area of high concentration to an area of lower concentration. One of the ways a substance can move in and out of a cell across the cell membrane.

firstly we know how fast the wave is travelling and we know for how long so using our speed equals distance over time equation we can rearange for distance (D= VT). we can the plug in our speed(V) and our ti...

firstly the largest power is x^2 so when factorising we know that both brackets must involve an x plus or minus a number. next we look at the 21 and we need two numbers that multiply together to get this num...

This is your example problem: (m 4 ) 3 ​First of all remember what a single power means. So:m 4 = m x m x m x mThis must mean that:(m 4 ) 3 = m 4 x m 4 x m 4 ​ ​If you expand this out, how many m's will you ...