how do you solve 6csquared-5c-6?

I don't understand this problem at all.
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1 Answer

Problem: how do you solve 6csquared-5c-6?
I don't understand this problem at all.

These are usually set to zero in order to solve them.

6c^2 - 5c - 6 = 0
(3c + 2)(2c - 3) = 0     cross multiplying gives -9c + 4c = -5c

One, or both, of the factors must equal zero.
Solve both.

(3c + 2) = 0
3c = -2
c = -2/3

(2c - 3) = 0
2c = 3
c = 3/2

Answer: c = 3/2 and c = -2/3

 

by Level 11 User (78.4k points)

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