Best Answer

x2 + 4 = 0

then get the x on one side.

x2 = -4

then find the square root of both which would cancel the square on the x.

therefore the answer is: x = the square root of -4 = i squared root 4, which is a complex number ( imaginary number) since you cannot find the square root of oa negative number

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Q: How to solve X squared plus 4 equals zero?

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