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Mama L [17]
3 years ago
5

Use pascals triangle to find the coefficient of the third term in the expansion of (a + b)2

Mathematics
1 answer:
yanalaym [24]3 years ago
3 0

Answer:

2. ( a + b )

Step-by-step explanation:

The (a + b)2 formula is the algebraic identity used to find the square of the sum of two numbers. To find the formula of the binomial in the form (a + b)2, we will just multiply (a + b) (a + b).

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<img src="https://tex.z-dn.net/?f=5x%5E%7B2%7D%20-%2015x-4%3D0" id="TexFormula1" title="5x^{2} - 15x-4=0" alt="5x^{2} - 15x-4=0"
Brrunno [24]

Answer:

<h3>x = 3/2 ± √(61/20)</h3>

Step-by-step explanation:

5x² - 15x - 4 = 0

Add 4 to both sides.

5x² - 15x = 4

The coefficient of 5x² is 5, divide both sides by 5.

x² - 3x = 4/5

The coefficient of -3x is -3. Let b=-3.

Then we need to add (b/2)^2=9/4 to both sides to complete the square.

Add 9/4 to both sides.

x² - 3x + 9/4 = 61/20

Factor left side.

(x-3/2)² = 61/20

Take square root of both sides.

x-3/2 = ± √(61/20)

Add 3/2 to both sides.

x = 3/2 ± √(61/20)

8 0
4 years ago
Raul ran 3/4th mile in a race Eduardo ran 2/7 of the distance that Raul ran what distant that Eduardo Run
Alinara [238K]
So 'of' means multiply
3/4 times 2/7
remember that \frac{x}{y} times \frac{z}{t}=\frac{x times z}{y times t}
so
\frac{3}{4} times \frac{2}{7}=\frac{3 times 2}{4 times 7}=\frac{6}{28}=\frac{3}{14} mile



answer is eduardo ran\frac{3}{14} mile




7 0
3 years ago
Help me on this please
ruslelena [56]

Answe65

Step-by-step explanationthat the anews

3 0
3 years ago
HELP THESE MATH QUESTIONS PLEASEEEEEEEE!!!<br> ASAPPPPP!!
PilotLPTM [1.2K]
The answer is y = +8

Explanation:
Since they tell us what x equals (3), let's plug that into the equation

y = (3) + 5

Now, we can just add 3 and 5 together, which we get 8

y = +8
4 0
4 years ago
Evaluate ( 75 − 3/17 + 1 ) 2
Ede4ka [16]

Answer:

2=1289/17

Step-by-step explanation:

use the given functions to set up and simplify 2

7 0
2 years ago
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