Answer:
-2, 2
Step-by-step explanation:
4x²=9+7
4x²=16
x²=4
x=+/-√4
x= - 2 ,or x = +2
x = ±2 (x = 2 or -2)
Start with the equation [tex]4x^2-7=9[/tex].
Add 7 on both sides of the equation to get [tex]4x^2=16[/tex].
Divide both sides by 4 to get [tex]x^2=4[/tex].
Now, find the square root of each side to get a final answer of [tex]x=±2[/tex], which means x can be either 2 or -2.
