menu
QAmmunity.org
Login
Register
My account
Edit my Profile
Private messages
My favorites
Ask a Question
Questions
Unanswered
Tags
Categories
Ask a Question
HELP! Multiplying radicals. Questions on photo.
asked
May 23, 2019
31.7k
views
1
vote
HELP! Multiplying radicals. Questions on photo.
Mathematics
middle-school
Vasspilka
asked
by
Vasspilka
7.9k
points
answer
comment
share this
share
0 Comments
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1
Answer
3
votes
These are 10 questions and 10 answers
1)
Answer: third option 6∛5
Step-by-step explanation:
24 = 2^3 * 3
45 = 3^2 * 5
=> 24 * 45 = 2^3 * 3^3 * 5
=> (∛24).(∛45) = ∛[ (2^3).(3^3).5 ] = (2)(3)∛5 = 6∛5
2)
Answer: second option.
Demostration:
3)
Answer: first option 10
Justification:
√10 . √10 = (√10)^2 = √(10^2) = √100 = 10
4)
Answer: fourth option: 7
Step-by-step explanation:
5)
Answer: the third option: 7x^2 - 12x√14 + 72
Solution:
Notice that it is the two factors are identical, so this is a perfect square binomial:
(x√7 - 3√8)^2 = (x√7)^2 - 2*(x√7)(3√8) + (3√8)^2 = 7x^2 - 6√(56)x + 72 =
= 7x^2 -(6)(2)x√14 + 72 = 7x^2 - 12x√14 + 72
6) √12 . √18
Answer: the fourth option 6√6
Step-by-step explanation:
√12 . √18 = √ (2 . 2 . 3 . 2 . 3 . 3) = √ [( 2^3) . (3^3)] = 2 . 3 √6 = 6√6
7)
Answer: first option y^3
Justification:
8) ∛d . ∛d . ∛d
Answer: first option: d
Step-by-step explanation:
∛d . ∛d . ∛d =
9)
Answer: second option
Step-by-step explanation:
10) (∛4) . √3
Answer: third option
Step-by-step explanation:
MikeVaughan
answered
May 29, 2019
by
MikeVaughan
9.1k
points
ask related question
comment
share this
0 Comments
Please
log in
or
register
to add a comment.
← Prev Question
Next Question →
No related questions found
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.
9.5m
questions
12.2m
answers
Other Questions
How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
Write words to match the expression. 24- ( 6+3)
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
Search QAmmunity.org