1
Question
Factorise:
p2−11p−42
p2−11p−42
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Solution
p2−11p−42=p2−14p+3p−42=p(p−14)+3(p−14)=(p−14)(p+3)
Hence, p2−11p−42=(p−14)(p+3).
p2−11p−42=p2−14p+3p−42=p(p−14)+3(p−14)=(p−14)(p+3)
Hence, p2−11p−42=(p−14)(p+3).
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