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Sophie [7]
3 years ago
13

Solve n3 + 2n2 - 15n = 0 by factoring.

Mathematics
2 answers:
azamat3 years ago
5 0
N³ - 2n² - 15n = 0

"n" 

n (n² + 2n - 15) = 0

n = 0

n² + 2n - 15 = 0

Δ = (2)² - 4(1)(-15)
Δ = 4 + 60 = 64

n' = (-2+8) / 2 = 6/2 =3
n'' = (-2-8) / 2 = -10/2 = -5

Solution:

S {-5 , 0 , 3 }
Naily [24]3 years ago
5 0
N^3+2n^2-15n=0

n(n^2+2n-15)=0

n(n^2+5n-3n-15)=0

n(n(n+5)-3(n+5))=0

n(n-3)(n+5)=0

n={-5, 0, 3}
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5 0
3 years ago
Read 2 more answers
What is the distance between -45 and 65
tatyana61 [14]

Answer:

110

Step-by-step explanation:

What is the Difference between -45 and +65? In other words, what is the Difference between negative 45 and positive 65?

To solve this math problem, start by picturing a horizontal number line that starts with negative infinity on the left and ends with positive infinity on the right:

∞ ..... -3, -2, -1, 0, +1, +2, +3, .... ∞

The Difference between -45 and +65 is the distance between -45 and +65 on our number line above. Thus, the Difference between two numbers will always be a positive number.

It is a two-step process to calculate the Difference between -45 and +65. Step 1 is to subtract +65 from -45, and Step 2 is to find the absolute value of the Step 1 answer. Here is the math to illustrate better:

(-45) - (+65) = -110

|-110| = 110

That's it! The Difference between -45 and +65 is as follows:

110

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3 years ago
Use the Distributive Property​ to simplify the expression<br> 4(​c​ - 2)
xeze [42]

Answer

Step-by-step explanation:

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3 0
3 years ago
Please help!! giving brainliest !!!
ryzh [129]

Answer:

vertical angle theorem

Step-by-step explanation:

angles that are opposite of  each other and formed by two intersecting straight lines, are congruent.

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Answer:

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