student says that if 5x2 = 20, then x must be equal to 2. Do you agree or disagree with the student? Justify your answer.

Question

01-09-2017
Mathematics

contestada

student says that if 5x2 = 20, then x must be equal to 2. Do you agree or disagree with the student? Justify your answer.

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irayhan2020padi97 irayhan2020padi97 · Answer 1 · 2018-07-09T22:52:52+02:00

irayhan2020padi97 irayhan2020padi97

09-07-2018

I disagree. If each side of the equation is divided by 5, the result is x2 = 4. By the square root property of equality, x = -2 or x = 2. So x could be -2 instead of 2.

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saabbelqis saabbelqis · Answer 2 · 2020-10-27T22:42:35+01:00

saabbelqis saabbelqis

27-10-2020

Answer:

I disagree. If each side of the equation is divided by 5, the result is x2 = 4. By the square root property of equality, x = -2 or x = 2. So x could be -2 instead of 2.

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