Question and answer
Find the sum of the given polynomials. 2mn + 4n 2 and 5m 2 - 7mn
Question
Asked 5/4/2015 10:44:02 AM
Updated 6/6/2015 12:33:30 PM
3 Answers/Comments
This answer has been confirmed as correct and helpful.
Edited by jeifunk [6/6/2015 12:33:27 PM], Confirmed by jeifunk [6/6/2015 12:33:30 PM]
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Original conversation
User: Find the sum of the given polynomials. 2mn + 4n 2 and 5m 2 - 7mn

Weegy: 2mn + 4n2 + 5m2 - 7mn = 5m2- 5mn+ 4n2
wiwit|Points 688|

User: Reduce -8 + b 2 by 5 + b 2.

User: Take -4 + 3a 2 from 7a - a 2.

Weegy: (7a - a^2) - (-4 + 3a^2) = -4a^2 + 7a + 4
Andrew.|Points 51544|

User: Find a - 2b + 3c diminished by a - 2b - 3c + d.

Weegy: (a - 2b + 3c)-(a - 2b - 3c + d) = 6c - d
scijoe21|Points 2275|

User: Find 2p^2 + 3p - 4 less - 2p^2 - 3p + 4.

User: After arranging the terms in descending powers of a variable, select the opposite of the polynomial. 9 - 12n 2 + 4n 3 - 7n

Weegy: 9 - 12n^2 + 4n^3 - 7n = (n+1) (4 n^2-16 n+9)
jeifunk|Points 48277|

User: Simplify 3j - {2k - [5h - (3j + k)]}.

Weegy: 3j - {2k - [5h - (3j + k)]}

= 5h - 3k



User: Find x - y less than 0.

User: Simplify 2m - [n - (m - 2n)].

Question
Asked 5/4/2015 10:44:02 AM
Updated 6/6/2015 12:33:30 PM
3 Answers/Comments
This answer has been confirmed as correct and helpful.
Edited by jeifunk [6/6/2015 12:33:27 PM], Confirmed by jeifunk [6/6/2015 12:33:30 PM]
New answers
Rating
3
-8 + b - (5 + b^2)
= -8 + b - 5 - b^2
= -13 + b - b^2
Added 5/4/2015 7:24:26 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [6/6/2015 12:29:48 PM]
3
2p^2 + 3p - 4 - (-2p^2 - 3p + 4)
= 2p^2 + 2p^2 + 3p + 3p - 4 - 4
= 4p^2 + 6p - 8
Added 5/4/2015 7:26:36 PM
This answer has been confirmed as correct and helpful.
Rated good by jeifunk, Confirmed by jeifunk [6/6/2015 12:34:39 PM], Rated bad by jeifunk
3
2m - [n - (m - 2n)]
= 2m - [n - m + 2n]
= 2m - 3n + m
= 3m - 3n
Added 5/4/2015 7:28:27 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [6/6/2015 12:34:48 PM]
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Simplify (x 2 y) 3.
Question
Not Answered
Updated 4/27/2015 6:36:31 PM
1 Answer/Comment
(x^2y)^3
= x^6y^3
Added 4/27/2015 6:36:31 PM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [4/27/2015 6:49:41 PM]
Simplify. (-4·3·2)2
Weegy: (-4 * 3 * 2)^2 = (-24)^2 = 576 User: Simplfy. (a 2 b 3)4 Weegy: (a^2 b^3)^4 = a^8 b^12 User: Simplify. (-7p)3 Weegy: (-7p)^3 = (-7p)(-7p)(-7p) = (49p^2)(-7p) = -343p^3 User: The expression (2x2)3 is equivalent to _____. (More)
Question
Not Answered
Updated 6/6/2015 11:49:44 AM
1 Answer/Comment
The expression (2x^2)^3 is equivalent to 8x^6.
Added 4/27/2015 9:25:19 PM
This answer has been confirmed as correct and helpful.
Confirmed by sujaysen [6/6/2015 2:33:13 PM]
Evaluate (x + y )^0 for x = –3 and y = 5. User: Simplify. n^6 • n^5 ÷ n^4 • n^3 ÷ n^2 • n
Question
Updated 4/27/2015 12:02:13 PM
2 Answers/Comments
(x + y )^0 for x = –3 and y = 5;
(-3 + 5)^0
= 2^0
= 1
Added 4/27/2015 12:02:02 PM
This answer has been confirmed as correct and helpful.
n^6 • n^5 ÷ n^4 • n^3 ÷ n^2 • n
= n^11 ÷ n^4 • n^3 ÷ n^2 • n
= n^7 • n^3 ÷ n^2 • n
= n^10 ÷ n^2 • n
= n^8 • n
= n^9
Added 4/27/2015 12:02:13 PM
This answer has been confirmed as correct and helpful.
Evaluate the following expression. (-6)^-2
Question
Not Answered
Updated 5/4/2015 12:54:35 PM
1 Answer/Comment
(-6)^-2 = 1/(-6)^2 = 1/36
Added 5/4/2015 12:54:35 PM
This answer has been confirmed as correct and helpful.
Confirmed by sujaysen [5/6/2015 2:24:05 PM]
(2n^3 + 4n^2 - 7) + (-n^3 + 8n - 9)
Weegy: (2n^3 + 4n^2 - 7) + (-n^3 + 8n - 9) = 2n^3 + 4n^2 - 7 - n^3 + 8n - 9 = n^3 + 4n^2 + 8n - 16 (final answer) (More)
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Expert Answered
Updated 5/8/2015 2:31:50 PM
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