√18
a. 6
b. 4
c. 3√2
d. 2√3
2007-12-17 03:26:11 · 5 answers · asked by . 1 in Science & Mathematics ➔ Mathematics
√18 = √(9 x 2) = 3√2
OPTION c
2007-12-17 03:30:44 · answer #1 · answered by Como 7 · 4⤊ 1⤋
The product rule says that: The root of a product equals the products of the roots.
In symbols for square roots it says:
sqrt(AB) = sqrt(A)sqrt(B)
So sqrt(18) = sqrt(2*9) = sqrt(2)sqrt(9) = 3sqrt(2)
2007-12-17 11:32:29 · answer #2 · answered by baja_tom 4 · 0⤊ 1⤋
â18 =â9x2 = â 3x3x2 = 3â2
Answer is c. 3â2
2007-12-17 11:31:16 · answer #3 · answered by Murtaza 6 · 0⤊ 1⤋
Deriving it...
Same thing as 18^1/2
Using product rule: .5(18)^-.5
Simplifying it...
same thing as sqrt(9*3)
take out the 9
the answer is c
2007-12-17 11:30:49 · answer #4 · answered by ひいらぎ 5 · 0⤊ 1⤋
c
2007-12-17 11:29:42 · answer #5 · answered by markhamnr 2 · 0⤊ 0⤋