(1) (p + 9)2 – 20(p +9) - 125 only tell if know with full explanation
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Step-by-step explanation:
(p + 9)2 – 20(p +9) - 125 = 0
=》 2p + 18 - 20p - 180 - 125 = 0
=》-22p + 18 - 305 = 0
=》 -22p - 287 = 0
=》-22p = 287
=》 -p = 287/22
=》 -p = 13.04545...
=》 p = -13.04545...
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