Why can #x^2-4=0# have multiple solutions? Isn't the answer just #x=2#?

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Answer 1 · 2015-10-21T14:49:48

The answer is directly related to the power of the variable.

The answer is directly related to the power of the variable.

if # x^2 = 4 #
then,

#x# will have 2 values.

First # x = +2 #
Second # x = -2 #

Similarly,

if # x # has a power of 3

It'll have 3 values and so on.