Search over 10,000 free study notes

First simplify the equation! This means making the side with your Xs on easier to read.162÷2=81Now we have x² = 81 √81=9(Remember 9x9=81.)

Rearrange y - 3x = 13 to y = 13 + 3xSquare y to give y^2 = 169 +78x +9x^2Sub into first equation to give x^2 + 169 + 78x +9x^2 = 25Simplify to give 10x^2 + 78x + 144 = 0 Apply quadratic formula to solve ...

As it is not clear which is biggest, we need to make sure that the fractions are in their simplest form. For 33/56 there no common factors so this is the simplest form. 4/7 is clearly in the simplest form...

Baroque music is far more ornate than that of the classical era with less regular phrasing. Baroque music also uses a more polyphonic texture than classical music, meaning there are more interweaving line...

Because metal compounds contain delocalised electrons that are free to move about the ionic lattice that forms the metal, carrying charge.