why does the equation x^2=-9 has no real solution
why does the equation x^2 = 9 has two solutions
Algebra Please Help - Holly, Monday, November 7, 2011 at 3:41pm
x^2=-9 has no real solution because when you square a number, it is always positive. There are never negative squares of numbers.
x^2=9 has two solutions because one solution is the given 3*3=9 and the other is -3*-3 because when you multiply two negative numbers they become positive.