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2007-11-06 16:27:10 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
What is so confusing in this question?
The math is quite straight forward.. The ans is 4.
2007-11-06 20:06:11 · answer #1 · answered by patel.nayan 2 · 0⤊ 0⤋
answer is 4, i did it in my head lol
by the way, the guy who gave the first answer gave you some good advice, problem is, that tells you nothing about how to get the answer, its a lot faster to actually do the work. first move the 6 to the other side by subtracting it, this should give you a -2 on the right side of the equal sign. Then square both sides, canceling the sqrt and giving you a 4 on the right side of the = sign. finally move the 8 and you should have -x = -4, so positive x must equal positive 4
2007-11-06 16:40:06 · answer #2 · answered by Anonymous · 0⤊ 0⤋
i have a problem similar to that (kind of) in my class... anyway, if you follow my book, the answer would be 4(i think). your initial equation should be square root of (8-x) equals 4-6. then square both sides {(8-x) and (4-6)}... then go on with the rest of the equation. Good Luck!
2007-11-06 16:43:12 · answer #3 · answered by japinx 2 · 0⤊ 0⤋
(8-x)^(1/2) + 6 = 4
transpose (shift to the other side) all numbers not under the square root symbol.
(8-x)^(1/2) = 4 - 6
square both side of the equation to get rid of the square root operation
8 - x = 4
x = 8 - 4
x = 4
2007-11-06 16:37:33 · answer #4 · answered by master ice 2 · 0⤊ 0⤋
subtract 6 from each side.
square both sides.
subtract 8 from both sides.
change the signs on both sides.
the answer is 4.
2007-11-06 16:36:11 · answer #5 · answered by crazi3 c 4 · 0⤊ 0⤋
sqrt(8-x)=4-6 =-2
8-x =(-2)^2=4
-x =4-8
x =4
2007-11-06 16:42:07 · answer #6 · answered by ? 1 · 0⤊ 0⤋
so - substitute all 4 possible answers
and you will see what the correct answer of the five is!
all the best (work the grey matter)
2007-11-06 16:32:01 · answer #7 · answered by tom4bucs 7 · 0⤊ 0⤋