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First, notice that any equation crosses the x-axis when y = 0.Second, notice that x 2 + x - 2 = 0 is an example of a quadratic equation. So, we generally do 1 of 3 things (Factorise, Complete the square or u...

The subjunctive is always preceded by que/ qui and almost always in a dependent clause. However, these two factors can be present without the subjunctive being required, so how do we know? The first indicato...

The comparative poetry aspect of the A level English Literature Edexcel exam can be quite tricky and in fact, if we look at the grade boundaries by unit we can see that the poetry paper has the lowest grade ...

To prove (x+2) is a factor, the value of x that makes x+2 equal 0 must be substituted into the function g(x) also making g(x)=0. In this case, the value of x being -2 makes x+2 equal to 0 and when substitute...

The answer is 2/3. This can either be obtained by performing a standard integration of y=x^2, using the power rule, between x = 1 and x = -1. Alternatively, integrate y = x^2 between x = 0 and x = 1, then do...