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When we're doing algebra and expanding brackets, our first step is to multiply everything inside each bracket by what we have just before the bracket. Let's start with the 4(x+5). 4 lots of our unknown my...

An even number is any number that can be divided by two to give a whole number. If we define "n" as "any whole number", we can say that "2n" is an even number. Odd numbers ca...

Due to sunlight only reaching one side of the tip, the plant hormone auxin will gather on the shaded side. As the auxin is acting in the plant shoot, it promotes cell division and elongation of the shaded...

John's anger at Jenny's financial support for his family is summed up in his attitude that he is the 'heid of the hoose', despite his inability to provide for his own family. The shame, jealousy, and ange...

It's a rule that tells us about the motor effect.If a wire carrying a current enters a magnetic field and the current in the wire is travelling perpendicular to the direction of the magnetic field. The wi...