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Let's look at the function y = 3x^2 + 6x + 3. Differentiating it gives us the derivative of y: dy/dx = 6x + 6. The original function has three terms. Let's look at each term:
a) Draw graph and find points of intersection (will be done on whiteboard). b) Sum equations to get 7x=7, so x=1 and y=1.
23/7 = (21+2)/7 = (3*7+2)/7 = 3 2/7
(x - 3)(x + 4) = 0 x=3 and x=-4
Using the F.O.I.L rule, standing for first, outside, inside, last, we would multiply out the relevant terms. to give: 2x^2+4x+14x+28. Once we have successfully multiplied out the brackets, we would identi...
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