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Nuetrik [128]
3 years ago
15

What are the roots of the polynomial equation? x2+11x−80=0

Mathematics
2 answers:
dolphi86 [110]3 years ago
5 0
The roots would be x=5,16
tino4ka555 [31]3 years ago
5 0

Answer: The roots of the polynomial equation are 5 and -16.

Step-by-step explanation:

Since we have given that

x^2+11x-80=0

So, we need to find the roots of the polynomial equation:

We will use "Split the middle term":

x^2+11x-80=0\\\\x^2+16x-5x-80=0\\\\x(x+16)-5(x-16)=0\\\\(x-5)(x+16)=0\\\\x=5,-16

Hence, the roots of the polynomial equation are 5 and -16.

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When you subtract 76 by 8 and make it a pattern, then what rule can it be?
ludmilkaskok [199]

Answer:9.5

Step-by-step explanation:

5 0
2 years ago
Which of the following expression is equal to x^2+25?
nignag [31]
A: (x + 5i)^2
= (x + 5i)(x + 5i)
= (x)(x) + (x)(5i) + (5i)(x) + (5i)(5i)
= x^2 + 5ix + 5ix + 25i^2
= 25i^2 + 10ix + x^2


B: (x - 5i)^2
= (x  +   - 5i)(x +  - 5i)
= (x)(x) + (x)(- 5i) + (- 5i)(x) + (- 5i)(- 5i)
= x^2 - 5ix - 5ix + 25i^2
= 25i^2 - 10ix + x^2


C: (x - 5i)(x + 5i)
= (x +  - 5i)(x + 5i)
= (x)(x) + (x)(5i) + (- 5i)(x) + (- 5i)(5i)
= x^2 + 5ix - 5ix - 25i^2
= 25i^2 + x^2


D: (x + 10i)(x  - 15i)
= (x + 10i)(x +  - 15i)
= (x)(x) + (x)(- 15i) + (10i)(x) + (10i)(- 15i)
= x^2 - 15ix + 10ix - 150i^2
=  - 150i^2 + 5ix + x^2



Hope that helps!!!

6 0
3 years ago
Read 2 more answers
A) What is the slope and the y-intercept of the equation?
Zielflug [23.3K]

Answer:

see explanation

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + b ( m is the slope and b the y- intercept )

Calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (0, 3) and (x₂, y₂ ) = (4, 0) ← 2 points on the line

m = \frac{0-3}{4-0} = \frac{-3}{4} = - \frac{3}{4}

The y- intercept is where the line crosses the y- axis

The line crosses the y- axis at (0, 3 ) ⇒ b = 3

(b)

y = - \frac{3}{4} x + 3 ← equation of line

8 0
3 years ago
How to solve 2d-e=7 d+e=5
loris [4]
<span>2d – e = 7 </span>
<span>d + e = 5 </span>

<span>3d=12 </span>

<span>d=4 </span>


8 0
3 years ago
Kianna is trying to run a certain number of miles by the end of the month. If Kianna is 75% of the way to achieving her goal and
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Answer:

una stoy bien dias

Step-by-step explanation:

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