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Does a^3 × b^3 = 3^3 can't be easily solved with fraction 1/3. To be fair. The powers wont be equal value to digit?
8 Answers
- ?Lv 61 year ago
a³ x b³ = 3³
(ab)³ = 3³
ab = 3
Put a = 1, b = 3 (or) a = 3, b = 1
Source(s): http://myrank.co.in/ - ?Lv 71 year ago
(a^3)(b^3)=3^3
=>
(ab)^3=3^3
=>
ab=3
=>
b=3/a
For every given "a" there is one "b"correspond-
ing to it. Thus there are infinitely many (a,b) in R, except a=0 or b=0, satisfying the given equation. e.g. if a=1, then b=3=>(1,3) is a solut-
ion.
- DWReadLv 71 year ago
a³×b³ = 3³
(ab)³ = 3³
ab = ∛3³ = 3
Suppose (a,b) = (⅓,9).
a³×b³ = (⅓)³×9³ = (1/27)×729 = 27 = 3³
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- ?Lv 71 year ago
What are you talking about? The left would just be (ab)^3 using the distributive property. Or, if you leave the problem as it is, if a or b = 1/3:
(1/3)^3 × b^3 = 3^3
3^(-3) × b^3 = 3^3
b^3 = 3^3 / 3^(-3)
b^3 = 3^(3 + 3)
b^3 = 3^6
b = (3^6)^(1/3) = 3^(6 × 1/3) = 3^2 = 9.
As long as ab = 3, 1/3 works fine.
- MorningfoxLv 71 year ago
I can't understand your problem, especially the part about "solved by fraction 1/3". One possible solution is a = 1, b = 3. Why don't you like that?