x^2-36=0
2007-09-04 08:53:15 · 5 answers · asked by baby166_99 2 in Science & Mathematics ➔ Mathematics
x ² = 36
x = ± 6
2007-09-08 06:46:09 · answer #1 · answered by Como 7 · 1⤊ 0⤋
x^2 = 36, so x = +/-6
2007-09-04 16:00:38 · answer #2 · answered by John V 6 · 1⤊ 0⤋
X^2-36 = 0
Add 36 to both sides and take the square root
X^2 = 36
X = 6
2007-09-04 15:59:27 · answer #3 · answered by drew2007 1 · 1⤊ 1⤋
square root of x^2 = x
square root of 36=6 6*6=36
therefore, x=6
to prove,
plug in number 6in x
x times x =x^2
6times 6=36
2007-09-04 16:23:09 · answer #4 · answered by INVENTOR 2 · 0⤊ 0⤋
x^2 -36 =0
(x+6)(x-6)=0
One of these terms must be zero for their product to equal zero. So either:
x+6=0
x= -6
OR
x-6 = 0
x = +6
Therefore x = +6 OR -6
VOILA!
2007-09-04 16:25:03 · answer #5 · answered by Mario 3 · 0⤊ 0⤋