Expand and simplify the following expression: x(5x – 2) – 3(x2 – 2x + 7)

5x2 – 2x – 3x2 + 6x – 21= 2x2 + 4x − 21

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Solve the inequality: x^2 - x < 12


8^(3/4)*2^(x) = 16^(4/5). Work out the exact value of x.


In an office there are twice as many females as males. 1/4 of females wear glasses. 3/8 of males wear glasses. 84 people in the office wear glasses. What is the total number of people in the office?


Rearrange the following to make m the subject: 4(m - 2) = t (5m +3)


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