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earnstyle [38]
3 years ago
13

What is the remainder when (4x3 + 2x2 − 18x + 38) ÷ (x + 3)? 2 12 96 110

Mathematics
2 answers:
Brilliant_brown [7]3 years ago
6 0
°°°4°°°2°°°-18°°°°°°38
•|
-3|°°°-12°°°30°°°°°-36
------------------------------'
°°°4°° -10 12°°°°° °°2
remainder=2
AlexFokin [52]3 years ago
3 0

Answer:  First Option is correct.

Step-by-step explanation:

Since we have given that

(4x^3+2x^2-18x+38)\div(x+3)

We will apply the "Remainder Theorem ":

So, first we take

g(x)=x+3=0\\\\g(x)=x=-3\\\\and\\\\f(x)=4x^3+2x^2-18x+38

So, we will put x=-3 in f(x).

f(-3)=4\times (-3)^3+2\times (-3)^2-18\times (-3)+38\\\\f(-3)=-108+18+54+38\\\\f(-3)=2

So, Remainder of this division is 2.

Hence, First Option is correct.

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SSSSS [86.1K]

Answer:

(216-18 \pi) \text{ square units}

Step-by-step explanation:

First, calculate the area of the rectangle.

Here, length = 18 units and Width = 12 units

The formula for calculating the area of the rectangle is A=L \times B

A=18 \times 12\\=216 \text{ square units.}

The radius of the semi-circle is 6 units.

The formula for calculating the area of the semi-circle is A=\dfrac{\pi \times r^2}{2}.

A=\dfrac{\pi \times 6^2}{2}\\=\dfrac{36 \pi}{2}\\=18 \pi \text{ square units.}

The area of the shaded region is equal to the difference of area of the rectangle and area of the semi-circle.

\text{Required Shaded Area }=(216-18 \pi) \text{ square units}

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Answer: y = (x + 7)² - 79

Explanation:

y = x² + 14x - 30

y = x² + 14x + 7² - 7² - 30

y = (x + 7)² - 79


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