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Jada is working on solving a quadratic equation, as shown here.
p2−5p=0
p(p−5)=0
p−5=0
p=5
She thinks that her solution is correct because substituting 5 for p in the original expression p2−5p gives 52−5(5), which is 25−25 or 0.
Explain the mistake that Jada made.
Sagot :
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