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Any quadratic equation, that is, an equation of the form ax2+bx+c=0, can be factorised, which means it is broken down into its linear factors. This means it wi...
Simplifying a surd means to express it using smaller numbers, making it easier to use in calculations. There are a couple of facts you will need to learn about surds, these are, 1) sqrt(a x b) = s...
To solve this question we first need to multiply the top part of the two fractions together to get the top part of the answer: 7×3=21. Then we need to multiply the bottom part of the two fractions togethe...
2x-5=3x+4 Firstly, you move the +4 to the other side (-5-4=-9). The equation should now look like: 2x-9=3x. You then move the 2x to the other side (3x-2x=x) so your answer would be x=-9
Firstly, we want to start off by calculating how many litres of diesel the lorry uses when it drives for 200 miles. We know that with 1 litre of diesel, the lorry can drive for 35 miles. Knowing this, we ...
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