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The method I would use here is FOIL (first outer inner last). A common mistake is not multiplying out all terms, using FOIL will ensure you do this.The working I would expect to see:2x^2-4x-4x+8 (order sh...

The nominative case is used for the subject of the verb, i.e. the noun doing the action. Consider this example: my brother has a dog. In this simple sentence, my brother is the subject of the verb as he o...

The human heart is described as a double pump because blood passes through it and gets pumped out of it twice in a single circuit of the circulatory system. A normal heart is separated into two halves, ri...

Some stimuli provoke an innate reaction—for example, a loud noise causes most people to startle. If I suddenly made a loud noise and you weren't expecting it, you'd probably jump a little. There are some ...

There are four different types of aspect in English: simple, perfect, progressive and perfect progressive. The perfect aspect is used for actions that have been completed, while the progressive shows that...