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When trying to work out and unknown angle in a right angled triangle, if you know the length of two sides you can use these the figure out the right trig function to use. SOH CAH TOA is an easy way to rem...

To integrate basic algebra you add one to the power of a value and then divide the coefficent by the new power, for example:To intergrate: 16x³You firstly add one to the power to get: 16...

For differentiation you simply multiply the coefficient of the unknown variable that you are differentiating by the power of the coefficient, then minus one from the power. For example to differentiate 3x...

First divide everything by 2:x² - 4x + 3.5 = 0Then divide number in front of the x by 2 and put it in a bracket squared + x. Then outside the bracket subtract the halved number squared. Keep th...

let f(x) = ax^3 + ax^2 + ax - 42if x-2 is a factor of f(x), then by remainder theorem, f(2) = 0and:a(2)^3 + a(2)^2 + a(2) -42 = 08a + 4a + 2a - 42 = 014a = 42a = 3