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To solve this equation we will want to first factorise the expression into two brackets, and then see what value makes each bracket 0. transform X^2-X-12=0 into (X+c)(X+d)=0We do this by finding factor pa...

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The first step to answering this question is recognising that the denominators should be factorised to find any common factors. Factorising 3/2x+12 gives 3/2(x+6) and factorising (x-15)/(x²-2x-...

first off, replace all x values with y and all y values with x, which gives us, X = 2Y + 3 / Y - 4 rearrange to give, X(Y - 4) = 2Y + 3 expand the bracket, XY - 4X = 2Y + 3 rearrange to get all Y...

10 students went to both France and Spain. This means the intersection of the two circles has 10 people. Use this information to subtract 10 from the 20 that visited France and the 15 that visited Spain. ...