Alex claims that the product of x^2 and x^4+x^2-1 will be x^8+x^4-x^2. explain the error made by alex

Question

Mathematics

Tango

14 August, 19:07

Alex claims that the product of x^2 and x^4+x^2-1 will be x^8+x^4-x^2. explain the error made by alex

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Answers (1)

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Phoebe Pearson · Answer 1

Step-by-step explanation:

the product is a result of multiplication ... so lets multiply

x^2 (x^4 + x^2 - 1) =

x^6 + x^4 - x^2

ok ... his mistakes are occurring because he is multiplying the exponents when he is supposed to be adding them.

exponent rule : x^a * x^b = x^ (a + b)