Q1 of 44 Page 167

Find the factors.

p2 – p – 420

p2 – p – 420

⟹ p2 + 20p – 21p – 420


⟹ p(p + 20) – 21(p + 20)


⟹ (p – 21) (p + 20)


So (p – 21) and (p + 20) are the factors of the given polynomial.


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