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a_sh-v [17]
3 years ago
15

(3x – 1)(2x +9) Multiplying polynomials

Mathematics
2 answers:
ad-work [718]3 years ago
8 0

We can use the FOIL method to simplify.

= (3x – 1)(2x + 9)

= (3x * 2x) + (3x * 9) + (-1 * 2x) + (-1 * 9)

= 6x + 27x + (-2x) + (-9)

= 33x - 11

Hope This Helped! Good Luck!

meriva3 years ago
7 0

Answer: 6x^2+25x-9

Step-by-step explanation: Expand he polynomial using the FOIL method.

FOIL : A math term that stands for First, Outer, Inner, and Last.

Hope this helps you out! ☺

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2 years ago
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antiseptic1488 [7]

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The gas mileage of Car A is 21 miles per gallon. The gas mileage of Car B is 30 miles per gallon. Which of the following graphs
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c for plato users;)

Step-by-step explanation:

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3 years ago
Prove that an = 4^n + 2(-1)^nis the solution to
olga nikolaevna [1]

Answer:

See proof below

Step-by-step explanation:

We have to verify that if we substitute a_n=4^n+2(-1)^n in the equation a_n=3a_{n-1}+4a_{n-2} the equality is true.

Let's substitute first in the right hand side:

3a_{n-1}+4a_{n-2}=3(4^{n-1}+2(-1)^{n-1})+4(4^{n-2}+2(-1)^{n-2})

Now we use the distributive laws. Also, note that (-1)^{n-1}=\frac{1}{-1}(-1)^n=(-1)(-1)^{n} (this also works when the power is n-2).

=3(4^{n-1})+6(-1)^{n-1}+4(4^{n-2})+8(-1)^{n-2}

=3(4^{n-1})+(-1)(6)(-1)^{n}+4^{n-1}+(-1)^2(8)(-1)^{n}

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Answer:

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So, Domain = [5,∞).

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