kam3864
09.02.2021 •
Mathematics
How do you find the length of a missing side when you already have the other two sides and you need the last side?
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Ответ:
Let's solve your equation step-by-step.
1
3
a2−
1
a
=1
1
3
a2+
−1
a
=1
Multiply all terms by a and cancel:
(
1
3
a2)(a)+−1=1a
1
3
a3−1=a(Simplify both sides of the equation)
1
a3−1−a=a−a(Subtract x from both sides)
1
3
a3−a−1=0
(Use cubic formula)
a=2.103803