Simplify the expression.
1. 3/ sqrt 2
2. sqrt 5(6sqrt2-sqrt5)
3. 4/sqrt20
Solve the equation.
4. sqrt3x-6=0
2007-07-04 09:37:36 · 3 answers · asked by Berry A 2 in Science & Mathematics ➔ Mathematics
Question 1
3 / √2 = 3√2 / 2
Question 2
√5.(6√2 - √5)
= 6.√10 - 5
Question 3
4/√20 = 4 / 2.√5 = 2/√5 = 2.√5 / 5
Question 4
Question reads as:-
√3.(x) - 6 = 0
√3.(x) = 6
x = 6 / √3
x = 6.√3 / 3
x = 2.√3
However you may mean:-
√(3x) = 6
3x = 36
x = 12
You choose!
2007-07-08 03:46:02 · answer #1 · answered by Como 7 · 0⤊ 0⤋
1. 3 sqrt (2) / 2
2. 6 sqrt (10) - 5
3. 2 sqrt (5) / 5
4. sqrt 3x = 6
3x = 36
x = 12
2007-07-04 16:43:02 · answer #2 · answered by Anonymous · 0⤊ 0⤋
1. What happens when you multiply the sqrt of 2 by the sqrt of 2? You get 2. If you multiply the numberator and the denominator by the sqrt of 2, you will get-
3 x sqrt 2 / 2 or 3/2 sqrt 2 or 1.5 sqrt 2
now you try the rest.
2007-07-04 16:57:03 · answer #3 · answered by skipper 7 · 0⤊ 0⤋