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The first step should be to rearrange the equation of the perpendicular line to PQ, in order to find the gradient, which works out to -3/2x. This can be done using the equation y=mx+c, where m is the grad...
This is a question from a non calculator GCSE paper only answered correctly by roughly half the students. The question is regarding the topic of surds and is quite a basic question testing your knowledge ...
Using the general form of a quadratic equation ax2+bx+c, we known that ax2+bx+c=(x+d)(x+e).The constant term, c, must be equal to the product of our two constants in the factorisatio...
√(62+82)=3√125a3√36+64=5a√100=5a10=5aa=2
Where we are given two equations that equal the same thing we can substitute one into the other e.g. (1) x2 + 3x + 10 = y (2) 4 - 2x = y. Sub (2) into (1) - replace y in (1) for (4 - 2x): x<...
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