Answer:
- <em>B. The grouping method of factoring trinomials involves rewriting the bx term into the factors that fit the particular trinomial, and factoring these four terms using grouping</em>
Explanation:
The description may be better explained by applying it to an example.
Example:
- the general form of a trinomial is a x² - bx - 30
- comparing with x² - x - 30 the <em>bx term </em>is - x
- then you must <em>rewrite the bx term, - x,</em> into two terms whose coefficients are factors of 30:
Two numbers which add up - 1 and multipled are - 30. Those numbers are - 6 and + 5, because -6 + 5 = - 1 and (-6) × (+5) = -30.
Hence, the two terms are -6x and 5x, and the expression rewritten is:
x² - 6x + 5x - 30
- <em>factor these four terms using grouping</em>:
(x² - 6x) + (5x - 30)
x(x - 6) + 5(x - 6)
(x - 6) (x + 5)
Hence, the factored trinomial is (x - 6) (x + 5)
That's right. The answer is not zero. In fact, there's no answer at all,
simply because there's no question. In math in general, division by zero
is "not permitted", and if people start talking about it, the answer is called
"indeterminate" ... that means vague, and can't be determined.
Division is repeated subtraction. 6 divided by 2 means: "How many times
can you take 2 away from 6 before the 6 is all used up and gone ?", and the
answer is: 3 times and then it's gone.
So the question is really asking: "How many times can you take zero away
from 5 before the 5 is all used up and gone ?". There's no answer, because
no matter how many times you take away zero, you can never use up the 5 .
One more comment on the subject: Save your question marks. One is plenty.
Nswer:
Formula for Circle if you know the Diameter - (π/4) × D2 = 201.06
Step-by-step explanation:
D = Diameter
π = Pi or 3.14...
You would usually round the answer to the nearest hundredth, so if you are looking for the answer, the answer would be 201.06
