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Take example (x+3)(x-4) We use FOIL - first, outer, inner, last We multiply each part by the other part. First -> x times x = x2 . Outer -> x times -4 = -4x (remember the minus infront o...
[Differentiate y = ln(x)] This is an example of many situations in maths where you need to solve something that is similar to what you can solve, but not in its current form. A good idea, then, i...
The question asks you to complete the square on the function f(x). First, we split the function:
f(x) = (x^2 + 5x) + 9
And recognise that we need the form (x^2 + 2k + k^2). Identifying 2k = ...
Indice rules are fundamental in answering this question 1) (ab)(ac) = a(b+c) 2) (ab)/(ac) = a(b-c) 3) (ab)c = aOWAnswered by Oak W. • Maths tutor3167 Views
6x - 5 > 4x + 13 (Take away 4x from each side)
2x - 5 > 13 (Add 5 to each side)
2x > 18 (Divide both sides by 2)
x > 9
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