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As we are told that the value of x is equal to 3, we are able to substitute this into our equation, so it becomes: 2(3)^2. We then use the rules of BIDMAS, so we must square the number 3 first (meaning we...

It can be tricky to know how to recognise the subjunctive tense, particularly since it is rarely used in English! Rather than referring to the subjunctive as a "tense" it is better to understand...

To be able to solve a quadratic, you must make it equal to zero. So the first thing you have to do is take away 5 from both sides. You could take away 6x^2-13x from each side, but it is much easier to kee...

Rice -> human. due to it having the fewest trofic levels (stages in the food chain) with each trofic level energy is lost through heat and movement as well as energy lost due to unabsorbtion in the dig...

If can replace a with 'avait' for instance they you do not need an a with apostrophe. i.e je vais à la cantine. (the sentence would not make sense if you were to replace à with avait hence you need 'à' an...