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There are two really simple steps we can use to be able to differentiate in a question like this. The first step is to multiply the number in the power by the number in front of the variable - in this cas...

Artists have often explored identity by creating portraits, both of him / herself and of others. If you look at a painter such as Holbein, you will see that he has included clothing and objects in the ima...

Apple costs: 30pBanana costs: 55pFinal Answer: £2.30Answer should be calculated by first interpreting the question to form two simultaneous equations. These can be solved by either substitution or elimina...

Line 1: y = 2x + 2 Line 2: y = x² - 1Firstly, intersection of two lines is the point at where the coordinates of both lines are the same. X1 = X2 and Y1 = Y2Therefore, that means...

We must factorise. Find factor pairs of -12;1,-12;-1,12;2,-6;-2,6;3,-4;-3,4. Out of the pairs, we must find the pair that will add up to -1 - this is because of the '-x' part of the equation. The answer i...