alleryWhy does x^2 + 1 = 0 have no real solution?
AIt has only two terms
BNo real number squares to -1
CIts coefficient is just 1
DIt is a linear equation
Answer & Solution
Correct answer: B. No real number squares to -1
1. Rearranging gives x^2 = -1.
2. The square of any real number is never negative.
3. So no real value works; the number of terms or the coefficient does not decide this.
_Source: Wikipedia, Elementary algebra, Quadratic equations_
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