Solve the equation. The square root of x + 4 = 3
2006-11-01 12:13:13 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
sqrt(x+4)=3
x+4=9
x=9-4
x=5
s
2006-11-01 12:15:26 · answer #1 · answered by Anonymous · 1⤊ 1⤋
x=5 5+4 =9 square root of 9 is 3
2006-11-01 12:20:58 · answer #2 · answered by momoftrl 4 · 0⤊ 0⤋
Square both sides of the equation. That gets rid of the square root sign on the left. Now you have x + 4 = 9. Subtract the 4 from both sides of the equation.
x = 5
2006-11-01 12:20:45 · answer #3 · answered by huckleberry 5 · 0⤊ 0⤋
easy,the square root of (x+4) is 3,only the square root of 9 is 3,so we can conclude that x+4=9
so x=5
2006-11-01 12:27:25 · answer #4 · answered by peterwan1982 2 · 0⤊ 0⤋
well 3 squared is 9....... So 9-4 equals 5.... So x=5
2006-11-01 12:20:08 · answer #5 · answered by dragonfly 3 · 0⤊ 0⤋
sqrt(x) + 4 = 3
Subtract 4 from both sides:
sqrt(x) = -1
To get rid of the square root, square both sides:
(sqrt(x))^2 = (-1)^2
x = 1
Sorry if that looks really messed up. XD
2006-11-01 12:17:07 · answer #6 · answered by Kris 1 · 0⤊ 1⤋