Is x = –3 a solution to the equation –3x2 = –27?
Mathematics · High School · Thu Feb 04 2021
Answered on
Given:
-3x^2 = - 27
Determine if x= -3 is a solution.
Solution:
To do so we simply need to divide both sides of the equation by -3 first.
-3x^2 = -27
-3x^2/-3 = -27/-3
x^2 = 9
Now we need to take the square root of both sides of the equation, this can be done by enclosing the value with a square root sign or by raising both sides of the equation with ½.
(x^2)^½ = (9)^½
x = +3
x = -3
FInal answer:
x = -3 is included in the solution.