Respuesta :
Answer:
(-3, 3).
Step-by-step explanation:
4x^2-36= 0
4x^2 = 36 Taking square roots of both sides:
2x = +/- 6
x = +/- 3.
Answer:
(-3, 3)
Step-by-step explanation:
The equation is:
[tex]4x^2-36=0[/tex]
to clear for x, first we move the -36 to the right as a +36 (or you can also say that we add 36 to both sides):
[tex]4x^2=36[/tex]
dividing by 4:
[tex]x^2=36/4\\x^2=9[/tex]
taking the square root:
[tex]x=[/tex] ± [tex]\sqrt{9}[/tex]
we add the ± because a square root has two solutions, a positive one, and a negative one.
Then we get:
[tex]x=[/tex] ± 3
The solutions are -3 and +3
which is represented in the option (-3, 3)
