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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<...

To answer this, you need to try and remove on of the letters from the equation. You could multiply the first equation by 2 so that the number in front of the y's are the same in both equations, with 10x+2...