Maths with David

    19 May

    There are seven tiles in a bag, each with one of the letters of the word POLYGON printed on it. One tile is selected, the letter noted and then the tile return. Another tiles is then selected and the letter noted. What is the probability that both of the tiles have the same letter on them?

    Write as a fraction 1.2 \dot{6}

    Solve 3(x+12) = x + 6

    Write the following as a single fraction in its simplest form: \frac{7}{6a} + \frac{a^2}{8}

    Expand and simplify (x-4)3