Question: Expand (p + 2)(p - 5)

Expanding - or geting rid of brackets. Make sure you multiply everything by everything! Correct: p2 +2p -5p -10 = p2 -3p -10     Wrong: p2 + 2p -5 ...forgot that the -5 also needs to be multiplied by (p+2) Wrong: p2 - 10 ...only multiplied the end bits    Wrong: p + 2p -5p -10 ... forgot that p x p = p2

Answered by Abdul N. Maths tutor

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