zigzagoon2000
What are the solutions of the equation?
c^210c=0
A. 1, √10
B. 0, –10
C. 0, √10
D. 0, 10
A, B, C, or D? Please explain :)



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jim_thompson5910
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c^210c=0
c(c10) = 0
See where to go next?

zigzagoon2000
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No, I do not.

jim_thompson5910
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c(c10) = 0
breaks up to
c = 0 or c10 = 0

jim_thompson5910
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then what

zigzagoon2000
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I don't know. I'm not good at algebra.

jim_thompson5910
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solve c10 = 0 for c

zigzagoon2000
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I don't know how.

jim_thompson5910
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something  10 = 0

jim_thompson5910
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what number goes in the place of "something"

LolWolf
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Important step:
If \[
a\cdot b=0
\]Then at least one of \(a, b\) must be zero.

zigzagoon2000
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10  10 = 0 @jim_thompson5910

jim_thompson5910
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so c10 = 0 means that c = 10

jim_thompson5910
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so c = 0 or c = 10

zigzagoon2000
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So the answer is D?


zigzagoon2000
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Ah, okay thank you :)