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To expand the brackets in a quadtratic equation you should multiply whatever is outside the bracket by that which is inside the bracket. For example: 2(x+3) First multiply the first part of the bracket with ...

Firstly, identify the recurring portion of the decimal. In this case, it is "13" set up an equation "x=0.2131313 You need to place the repeating section to the left of the decimal point. To do...

My advice is always past papers! There are only so many questions that the examiner can ask, and a lot of the time the questions have already turned up in previous papers. I would also just try to stay as ca...

Since there is an x^2 term, we know that there are two brackets that are of the form (x- ) (x- ), but we need to fill in the blanks! What are the two numbers where you can add them up to make 3, and you can ...

f(-1) = (-1)^3 - (-1)*7 - 6 = -1 + 7 - 6 = 0 Hence f(x) = (x+1)(x^2 + ax - 6) Expand this out f(x) = x^3 + ax^2 - 6x + x^2 + ax - 6 = x^3 + (a+1)x^2 + (a-6)x -6 By comparing co-efficients a + 1 = 0 a - 6 = -...