Question

factorize


p2 - 25p+84​

Answer 1

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p2-25p+84

= p(p-23-2)+84

=p2-23p-2p+84

=p(p-23)-2(p+42)

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Answer 2

Answer:

$\: \: \: \: {p}^{2} - 25p + 84 \\ = {p}^{2} + ( - 2 1- 4)p + 84 \\ = {p}^{2} - 21p -4p + 84 \\ = p(p - 21) - 4(p - 21) \\ = (p - 21)(p - 4)$