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(x²+2x - 3) = 0 We need to find 2 numbers that multiply to make -3 and add to make 2. Once we have found them we can use them to find the solutions to the quadratic. Answer = (x+3)(x-1) = 0 the...

If you are trying to work out what x is, then we need to end up with something that looks like: [x = ... ] On one side we have just 'x' and on the other ...

There are two things to understand with this question: 'differentiate' and 'with respect to x'we differentiate when we need to find how quickly something changes, which in maths usually means the gradient...

15 x 0.08 = £1.20 which means Nadia has £5 - £1.20 = £3.80 remaining£3.80/0.3 = 12.6 recurring so 12 whole rulers can be bought 12 x 0.3 = £3.60 spent on rulers£3.80 - £3.60 = £0.20 change remaining £0.20...

In order to solve this equation without using a calculator we will need to factorise. The first step in factorising this equation is to rewrite our 17x as two separate terms. The coefficients of these nee...