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Each banana cost 30p so the total price for bananas will be "number of bananas x 30". Here, bananas are called by the variable x so this number can be written as "30x" and will change ...
(-7/2,-31/4)
To complete the square you compare your equation in the form x2 + bx + c = 0 to a similar equation of (x + b/2)2...
Firstly, it is important to recognise that the answer will need to be in the form of two pairs of brackets because the question is asking us to factorise a quadratic equation. The equation only has a sing...
First expand the bracket (x-3)2 separately to give x2 - 6x +9 Next multiply by the 4 outside the brackets to give 4x2 -24x +36 Now all the terms have been expanded you can...
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