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Liono4ka [1.6K]
2 years ago
10

Which expression is equivalent to 21\root(3)(15)-9\root(3)(15)

Mathematics
1 answer:
chubhunter [2.5K]2 years ago
7 0

The equivalent expression of 21√(3)(15) - 9√(3)(15) is 36√5

<h3>How to determine the equivalent expression?</h3>

The expression is given as:

21√(3)(15) - 9√(3)(15)

Express 15 as 3 * 5

21√(3)(15) - 9√(3)(15) = 21√(3)(3 * 5) - 9√(3)(3 * 5)

Evaluate the product of 3 and 3

21√(3)(15) - 9√(3)(15) = 21√(9 * 5) - 9√(9 * 5)

Take the square root of 9

21√(3)(15) - 9√(3)(15) = 21*3√(5) - 9*3√5)

Evaluate the product

21√(3)(15) - 9√(3)(15) = 63√(5) - 27√5)

Evaluate the difference

21√(3)(15) - 9√(3)(15) = 36√5

Hence, the equivalent expression of 21√(3)(15) - 9√(3)(15) is 36√5

Read more about equivalent expression at

brainly.com/question/2972832

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ElenaW [278]

Answer:

-1 and -3

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Step-by-step explanation:

1. Find the Zeros

f(x)=x^{2} +4x+3

f(x)=\left(x+1\right)\left(x+3\right)

x+1=0\\x=-1\\x+3=0\\x=-3

2. Factoring Trinomials

f(x)=n^{2} -n-56

f(x)=\left(n+7\right)\left(n-8\right)

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3 years ago
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C 75.00- 1/3 were cookies which is 150 cookies. 150x0.50=75.00
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2 years ago
mikes deli just sold 328 ham sandwiches this week. around how many ham sandwiches did mike sold every day this week?
Alenkasestr [34]

Answer:

46.9

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328/7 = 46.9

To double check: 46.9 x 7 = 328

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You drive 140 miles in 2.5 hours and 300 miles in 5.5 hours. What is the rate of change ?
Sveta_85 [38]
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3 years ago
In the algebraic expression 7/y why is coefficient of y? Explain.
dybincka [34]

Answer:

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Step-by-step explanation:

7/y can be rewritten as 7(1/y) or as 7(y^[-1]).  In this case, yes, 7 is the (constant) coefficient of 1/y, but no, it is not the coefficient of y.

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