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In the French perfect tense, avoir and être are both used as auxiliary, or helping, verbs, like have in I have eaten in English. They are placed before the verb which s...

There are two ways accents are used in Spanish.

1. To show unusual emphasis. When a word ends in a vowel, n or s, the emphasis falls on the second-to-last syllable, unless ...

This is a quadratic equation. We can recall that this means the graph will have a parabolic shape. Next we need to do a little bit of manipulation to get our final bits of information. So we want to know ...

So both are examples of very strong bonding. These are strong bonds that are difficult to break. With covalent bonds, the electron are shared between atoms whereas in ionic bonds the electrons are 'taken'...

Firstly, your quadratic equation will be of the form ax² + bx + c where a, b and c will be numbers. Now you have to multiply a by c to get a number, say d. From this number d, you need to find ...