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There are two parts to this expression, the coefficients and the powers of x, and they can be addressed separately.It's important to remember the rules of indices - a m x a n = a m + n Also remember that 2x ...

This is a very common question as many people tend to not know here to begin in regards to answering most problem solving questions generally. My advice would be to approach the question the way i would; beg...

For this question, as we are looking for gf(x) so we first need to plug in our formula for f(x) into the g(x) formula, giving us: 2((x+1)^2 - 1) We can then expand our squared bracket to get: 2(x^2 + 2x + 1 ...

We have that y is inversely proportional to x, which we write mathematically as y ∝ 1/ x. We need to be able to solve this, so we re-write this expression as an equations, y = k/x, where k is the constant of...

Lets number the equations: 1) 3x + 2y = 17 2) 4x - y = 30If we double equation 2) we will get matching y coefficients so:8x - 2y = 60 if we rearrange this to be 8x-60 = 2y Then if we put these together: 3x +...