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xxTIMURxx [149]
3 years ago
9

Find all solutions by factoring. 4v2 - 25v = 21

Mathematics
1 answer:
Fiesta28 [93]3 years ago
8 0

Answer:

(4v + 3) and (v - 7)

Step-by-step explanation:

First rewrite 4v2 - 25v = 21 as 4v^2 - 25v - 21.

Let's now analyze -25v and -21.  We need to identify two integers whose product is 21 and whose sum is -25.  

Note that factors of -21 are ±1, ±3, ±7 and ±21.  Factors of 4 (the coefficient of v^2) are ±1, ±2 and ±4.

Check out the following trial factors:   (4v + 3) and (v - 7).  Does this product come out to the given 4v^2 - 25v - 21?  Yes.   So the desired factors of 4v2 - 25v = 21 are (4v + 3) and (v - 7).  Note how (3)(-7) = -21 and how 4(-7) + 3v add up to -25, the coefficient of the v term.

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Answer:

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Step-by-step explanation:

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5 0
3 years ago
I don't understand how to evaluate 2.28 please help me anyone?
Ostrovityanka [42]
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5 0
3 years ago
Julissa gave out an equal number of oranges to each of the 6 apartments on her floor. If she gave each apartment 5 orange, how m
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Answer:

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4 0
4 years ago
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kozerog [31]

Answer:

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Step-by-step explanation:

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