Typo free question:
Determine whether the binomial is a factor of F(x).
Answer:
Yes.
Step-by-step explanation:
Method one: evaluate F(5). If F(5) is zero then x-5 is a factor.
Method two: use long polynomial division to divide F(x) by (x-5). If the remainder is zero then (x-5) is a factor.
4x+(x+5)=20
5x+5=20
5x=15
X=3
Answer: C) All real values of x such that
In other words, x must be 0 or smaller.
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Explanation:
The reason why is because we must make the stuff under the square root to never be negative. We must make -2x be 0 or larger.
So,
As an example, if x = -2, then -2x = -2(-2) = 4 is positive. Applying the square root to a positive number is valid.
But if x = 5, then -2x = -2*5 = -10 is under the square root, which is not allowed.
You can express it as a decimal, fraction, or a percent.
Hope it helps!