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Murrr4er [49]
4 years ago
8

Qual o resultado da subtração dos dois polinômios abaixo? (2x2 + 4x) (–2x2 + x – 6)

Mathematics
1 answer:
Len [333]4 years ago
7 0

Answer:

-4x^4-6x^3-8x^2-24x

Step-by-step explanation:

\left(2x^2+4x\right)\left(-2x^2+x-6\right)\\

distribuir parênteses

=2x^2\left(-2x^2\right)+2x^2x+2x^2\left(-6\right)+4x\left(-2x^2\right)+4xx+4x\left(-6\right)

Aplicar regras de menos mais ;+\left(-a\right)=-a

=-2\times\:2x^2x^2+2x^2x-2\times\:6x^2-4\times\:2x^2x+4xx-4\times\:6x

simplificar

-2\times\:2x^2x^2+2x^2x-2\times\:6x^2-4\times\:2x^2x+4xx-4\times\:6x:\\\quad -4x^4-6x^3-8x^2-24x

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7 0
3 years ago
HURRYYYY!
DiKsa [7]

Answer: f(x) = − one fourth (x − 8)2

Step-by-step explanation: I'm not really sure how to explain it, but I'm almost 100% sure that's the right answer.

5 0
4 years ago
Skylar Sutherland earns a salary of $80,000 per year. How much is Skylar paid per month? *
Nataliya [291]

Answer:

6,666$

Step-by-step explanation:

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7 0
3 years ago
Approximate the zeros of the function. Round to the nearest tenth if necessary. f(x) = 4x^2 + 4x - 35. Explain each step on how
svet-max [94.6K]
4x²+4x-35=0
factor: (2x+7)(2x-5)=0
2x+7=0, or 2x-5=0
2x=-7 or 2x=5
x=-3.5 or x=2.5

I don't see any rounding necessary in this case. 

when you factor ax²+bx+c, you take the two factors of a and the two factors of c, one factor of a times one factor of c, the other factor of a times the other factors, the sum of the two products make b.
in this case, the factors of 4 is 2 and 2, the factors of -35 is -5 and 7. I line them up in the following way:
2    -5

2      7
then I multiple them diagonally, the top left 2 multiplying the bottom right 7=14, and the other 2 multiplying -5=-10, 14 and -10 make a sum of 4.

if you don't get the desired sum, switch the factors up and down till you have the right combination. Note: Do not switch left and right. 

I hope this makes sense to you.
8 0
3 years ago
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jeka57 [31]

Answer:

2\frac{2}{5}

Step-by-step explanation:

12 divided by 5= 2.4

OR

2 2/5

Hope this helps! :)

4 0
3 years ago
Read 2 more answers
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