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Firstly, we can identify 2X² + 5X + 2 = 0 as a quadratic equation by the fact it is an X² term, an X term and an integer term all within the same equation, and is equal to zero. To s...

Differentiating gives the rate of change and velocity and acceleration are rates of change. Velocity is the rate of change of displacement compared to time and acceleration is the rate of change of veloci...

100-15=85 85/100 x 140 = 11900/100 = £ 119

=4x^2+12x+9

The first step that needs to be taken is to get rid of the square root from the denominator. This can be done by multiplying the top and bottom of the fraction by 2 + sqrt(3). This gives (10 + 5sqrt(3...