Answer:
{-1, 5} (two real solutions).
Step-by-step explanation:
On the left side we want x^2, not x?
We need to rewrite x? = 4x - 5 in standard form, that is, as a quadratic with x terms in decreasing powers of x:
x^2 - 4x + 5 = 0
This factors easily to (x - 5)(x + 1) = 0.
We let each factor equal zero (0) separately and solve for x:
{-1, 5} (two real solutions).
F(x)·g(x) = (3x-2)(5x) = 15x^2 -10x
Your answer is 12.41x - 11.8
Answer:
20 watches were made.
Step-by-step explanation:
385=15n+85
300=15n
20=n
Rewrite as (2^1/2 + 2^1/2)*(18^1/2-2^1/2) = 8
