How do you solve the equation #2x^2+16=x^2+7#?
1 Answer
Jul 26, 2017
Not Real
Explanation:
- Combine like terms:
#2x^2+16=x^2+7#
#x^2 = -9# - Solve for x by taking the square root of both sides.
#sqrt(x^2)=+-sqrt(-9)#
The answer is not real, because you are taking the square root of a negative number. Nonetheless, the answer would be...
#x=+-3i#
