Question

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Factor: 12s^2-23s+5

Answer 1

Use the Factoring AC method. Find 2 numbers b1 and b2 that: b1*b2 = 60, and (b1 + b2) = -23. b1 = -3 and b2 = -20. Replace in the trinomial the term (-23x) by the 2 terms (-3x) and (-20x), then factor.

Answer 2

We pretty much did this one just now...
$$
12 s^2-23 s+5 = 12 s^2-20 s-3 s+5 = 3 s (4 s-1)-5 (4 s-1)
$$
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Answer 3

= (4s -1)(3s - 5)