c2 – 4c = 0

i need to solve this i have done it two different ways and got two different answers
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1 Answer

Problem: c2 – 4c = 0
i need to solve this i have done it two different ways and got two different answers

I'm going to risk making an assumption, that c2 is actually c^2.

c^2 - 4c = 0
We can factor the left side:
(c - 4)(c + 0) = 0

Setting the factors to zero, we solve for c.

c - 4 = 0
c = 4

and
c + 0 = 0
c = 0

Answer: c = 4  and  c = 0

 

by Level 11 User (78.4k points)
In case you are wondering, this graphs as a parabola, opening upward, crossing the x axis downward at (0, 0), bottoming out at (2, -4), and rising through (4, 0).
by Level 11 User (78.4k points)

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