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x2+7x+10 = 0 factorise this into the form (x+a)(x+b)=0 by finding out what 2 numbers multiply to make 10 and add up to 7. the 2 numbers that fit this criteria are 5 and 2 so (x+5)(x+2)=0, if we...
An easy way to remember how to expand double brackets is using FOIL. FOIL stands for First, Outer, Inner, and L...
The method for finding compound interest is: Original Amount x MultiplierTimeSo, from the question we know that: Original Amount= 40, Time= 3 years, so we say 3Next we need to work ...
First it’s important to check units, we notice that the dimensions are given in mm. Therefore in order to convert this to m^3 we need to multiply the volume in mm by (10^-3)^3 which gives us 2.64 x 10^-9....
Theory - Two lines on a graph will be parallel if their gradient is the same. The general equation of a line is y = mx + c where y and x are variables, m is the gradient and c is the y intercept. hence if...
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