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tai1611
13.10.2019 •
Mathematics
Use the remainder theorem to find the remainder when p(x) = x^4 – 9x^3 – 5x^2 – 3x + 4 is divided by x + 3.
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Ответ:
P(-3) = (0)Q(x) + R
i P(-3) = R
Now, P(-3) = (-3)⁴ - 9(-3)³ - 5(-3)² - 3(-3) + 4
So
P(-3) = 81 + 243 - 45 + 9 + 4
=. 292
hope it helps
Ответ:
Question :
(1) Use the Remainder Theorem to find the remainder when P(x) = x^4 – 9x^3 – 5x^2 – 3x + 4 is divided by x + 3.
Answers & Step-by-step explanation:
(1) P(x) = (x + 3)Q(x) + R
P(-3) = (0)Q(x) + R
i P(-3) = R
Now, P(-3) = (-3)⁴ - 9(-3)³ - 5(-3)² - 3(-3) + 4
So P(-3) = 81 + 243 - 45 + 9 + 4
=. 292
Question:
(2) Use the remainder theorem to find the remainder when P(x)=x^4−9x^3−5x^2−3x+4 is divided by x+3.
The Remainder Theorem:
In mathematics, the remainder theorem states that if we divide a polynomial, p(x), by a linear polynomial, x - a, then the remainder of that division problem is equal to p evaluated at a, or p(a). We can use this theorem to determine the remainder of various division problems without having to actually perform the division.
Answer and Explanation:
When we divide p(x)=x^4−9x^3−5x^2−3x+4 by x + 3, the remainder is 292.
To find the remainder of this division problem, we can use the remainder theorem. From the remainder theorem, we have that if we divide p(x)=x^4−9x^3−5x^2−3x+4 by x + 3, the remainder will be equal to p(x) evaluated at -3, or p(-3). Thus, to find the remainder, we simply evaluate p(-3).
p(−3)=(−3)^4−9(−3)^3−5(−3)^2−3(−3)+4=81+243−45+9+4=292
We get that p(-3) = 292, so when we divide p(x) by x + 3, we get a remainder of 292.
(3) use the remainder theorem to find the remainder when P(x)=x^4-9x^3-5x^2-3x+4 is divided by x+3. show your work if you answer please.
L(-3) = 292
Step-by-step explanation:
Plug in -3 for x
L(-3) = (-3)^4-9(-3)^3-5(-3)^2-3(-3)+4
A negative raised to an even power is as though it were a positive number being raised to that power. So replace those -3's with 3's.
3^4-9(-3)^3-5(3)^2-3(-3)+4
Use PEMDAS
81-9(-27)-5(9)+9+4
81+243-45+9+4
L(-3) = 292
(4) f(x)/(x-a) = f(a)
here a = -3
so we need f(-3)
f(-3) =(-3)^4-9(-3)^3-5(-3)^2-3(-3)+4
= 81 + 9*27 - 45 +9 + 4
= 81 + 243 - 45 + 9 + 4
=292
(5)
292
Explanation:
To divide by (x + 3 ) you don't have to divide by (x + 3 ) . Using the
Remainder Theorem you just have to evaluate P( - 3 ).
P(−3)=(−3)^4−9(−3)^3−5(−3)^2−3(−3)+4
= 81 + 243 - 45 + 9 + 4
= 292
ie. remainder = 292
Ответ:
70 square units
Step-by-step explanation:
The spreadsheet is attached.
It shows the area of the trapezoidal shape to be 70 square units.