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Can someone explain to me Linear Equations being equivalent? Why isn't x = -2 and x^2 = 4 equivalent? I don't understand why it is not. Additionally x = 7 and x^2 = 49…

Can someone explain to me Linear Equations being equivalent? Why isn't x = -2 and x^2 = 4 equivalent? I don't understand why it is not. Additionally x = 7 and x^2 = 49…
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Can someone explain to me Linear Equations being equivalent?

Why isn't x = -2 and x^2 = 4 equivalent? I don't understand why it is not. Additionally x = 7 and x^2 = 49 is also not equivalent and I cannot figure out why.

Thanks in advance!

asked
User Cathal Coffey
by
7.3k points

1 Answer

3 votes

Answer:

Explanation:

x² = 4 has two solutions, x=2 and x=-2.

answered
User Richard Ambler
by
8.5k points
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