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To prove n³-n is a multiple of 3 we rely on a few simple tricks. The first is to factorise the expression.n³-n = n(n²-1)n(n²-1) = (n-1)(n)(n+1)The next trick is...

Now remember that for differentiating polynomials the power is times by the coefficient and the power is reduced by one. This would mean that the answer now becomes: 2x + 2

Once again break down the question:
All prices are reduced by 18%, so sale price is 100% (normal price) - 18% (sale price) = 82%. As we know what the sale price is, but we DO NOT KNOW the normal pr...

There are four levels to a protein's structure:Firstly, the primary structure which is the sequence of amino acids linked by peptide bonds. This level determines the type/function of the protein by influe...

Since the voltage of alternating current, by definition, changes over time, it is helpful for physics to describe it using a sinusoidal curve. In this case, the amplitude of that sine curve becomes is wh...