The equation x2 − 9 = 0 has real solution(s). Answer is 2
Mathematics · High School · Mon Jan 18 2021
Answered on
Given the equation:
x^2 - 9 = 0
Determine the number of solutions from the equation.
Solution:
In order to determine the number of solutions, we simply needed to transpose -9 to the other side of the equation hence it must be taken to note that in transposing a number, the sign changes.
x^2 - 9 = 0
x^2 = 9
Take the square root of both sides.
x = 3
x = -3
Final answer:
2 solutions