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3 years ago

Multiply (4+i) (2-5i) .

Mathematics

2 answers:

Gre4nikov [31]3 years ago

3 0

Answer:

13 - 18i

Step-by-step explanation:

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Nitella [24]3 years ago

3 0

Answer:

-196 -49 i

Step-by-step explanation:

Hope this helps:)!!

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Pls telll/pls tell pls tell pls tell

grandymaker [24]

Answer: 2

Step-by-step explanation:

Given

The polynomial is $x^4+x^3-2x^2+x+1$ is divided by $x-1$

According to the remainder theroem

$\Rightarrow x-1=0\\\Rightarrow x=1$

Put $x=1$ in the polynomial to get the remainder

$\Rightarrow 1+1-2+1+1\\\Rightarrow 2$

So, we get the remainder 2.

7 0

3 years ago

X + 1 and 1/4 = -5/8

slavikrds [6]

X + 1 = - 1/4 - 5/8
x + 1 = -2 - 5 / 8
x + 1 = - 7/ 8
x = -7 /8 - 1
x = - 7 - 8 / 8
x = - 15 / 8

4 0

3 years ago

Read 2 more answers

If a polynomial function f(x) has roots 3+Sqrt(5) and -6, what must be a factor of f(x)

neonofarm [45]

Answer:

The two factors of the given polynomial f(x) are (x - 3 -√5) and (x +6) .

Step-by-step explanation:

Here, the roots of the given polynomial f(x) are

Root 1 = 3 + √5

and Root 2 = (-6)

Now,as we know that if x = a is the root of the any given polynomial p(x), then the expression (x-a) is the FACTOR of the polynomial p(x).

Now, here root 1 : x = 3 + √5

So, x - (3 + √5 ) is the FACTOR of the f(x)

or, ( x - 3 -√5) is the first factor of f(x).

Also, here root 2 : x = (-6)

So, x - (-6 ) = x + 6 is the FACTOR of the f(x)

or, ( x +6 ) is the second factor of f(x).

Hence, the two factors of the given polynomial f(x)

are ( x - 3 -√5) and ( x +6 ) .

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4 years ago

A 4-foot roll of plastic wrap costs $0.48. What is the price per inch?

Lapatulllka [165]

.1¢ || explanation: 1 ft=12 in, 4ft=48 in, 0.48 (divided by) 48 =0.1

7 0

3 years ago

I need help with number 4

Elden [556K]

Answer:

To find average speed, you divide total distance by total time.

8 0

3 years ago

Read 2 more answers