Solve 5x^2 + 6x + 1 = 0
5x2 + 2x + 1 = 0, x = -0.2 or -1
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All answers ▸Find the solutions to this quadratic equation: 0 = 2x^2 - 5x - 3
There are 35 people in a group. x(x+1) of them have a blue car, 5x of them have a red car, 4 have a blue and a red car and 4x-8 do not have car. Work out the probability that a person who has a blue car, has a red car as well.
An area of a garden needs to be tiled. It consists of a square area of 10m by 10m, with an outdoor pool in the middle of radius 3m. The tiles to be used are 50cm by 50cm, and cost 50p per tile. Find out how much it will cost to tile the area.
Please expand this equation and simplify: (2x + 5)(9x -4)