Jenna J.

asked • 12/01/15

Any help? please?

Explain why the following simplification is incorrect:
x+y=xy
Remember to use correct mathematical terminology.

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Inactive Tutor answered • 12/01/15

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Well on the left side you're adding the two variables, and on the right side you're multiplying them. That would be like saying 5 + 3 = 5 * 3, which we know isn't true. (8 = 15)
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Jenna J.

A "first line-last line" check is used to check algebraic expressions.In your own words,expalin why this
check can prove that simplification is incorrect,but does not prove that a simplification is correct.
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12/01/15

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