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y = 4x^3 - 6x^2 + 7 dy/dx = 12x^2 -12x
Straight line equations always come in the form y=mx+c, where m is the gradient of the line (how steep it it) and c is the point where the line crosses the y axis (the y intercept).If you are given two po...
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 ...
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