3ab-5ab (if a=4 and b=5)

I do not know how to do this question
in Algebra 1 Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

Simplify first: -2ab.

a=4 and b=5, so -2ab=-2×4×5=-40.

by Top Rated User (1.2m points)

Related questions

1 answer
if a(2)+b(2)=5ab ,find the value oof a3/b3+b3/a3
asked Jun 11, 2013 in Algebra 1 Answers by anonymous | 712 views
0 answers
Find the value of X if 9x^2-9(a+b)x b(2a^2+5ab+2b^2)=0
asked Jan 27, 2013 in Algebra 2 Answers by anonymous | 797 views
1 answer
if a^2 +b^2 +3ab is a square number.then what is (a,b)
asked Jul 24, 2017 in Pre-Algebra Answers by Mitul | 1.1k views
1 answer
Evaluate 3ab - (a + b) (if a = 4 and b = 5)
asked Nov 18, 2015 in Pre-Algebra Answers by anonymous | 1.6k views
2 answers
Evaluate: 3ab - (a + b) (if a = 4 and b = 5)
asked Nov 18, 2015 in Pre-Algebra Answers by anonymous | 2.0k views
2 answers
Evaluate: 3ab - (a divided by b) (if a = 4 and b = 5)
asked Nov 17, 2015 in Pre-Algebra Answers by anonymous | 815 views
1 answer
what i the pruduct of (5ab) and (-2a^2 b)^3
asked Sep 30, 2012 in Trigonometry Answers by anonymous | 667 views
1 answer
x^3-(2a+b)x^2+(3a+2ab)x-3ab; x-b
asked Jan 16, 2012 in Algebra 2 Answers by anonymous | 960 views
1 answer
simplify completely 3a2+5ab-2b2/b2-9a2
asked Mar 29, 2020 in Pre-Algebra Answers by anonymous | 1.6k views
1 answer
factor by grouping 2a^2+20b-8a-5ab
asked Oct 14, 2014 in Algebra 1 Answers by anonymous | 856 views
1 answer
5ab/8c divided by 10b/c
asked Oct 13, 2013 in Pre-Algebra Answers by anonymous | 1.0k views
2 answers
12ab+8ab+5ab
asked Jul 7, 2013 in Algebra 1 Answers by anonymous | 1.6k views
1 answer
what is the answer for (5a^2b^3+5ab)+(5ab-5a^2b^3 ?
asked Jun 3, 2013 in Algebra 2 Answers by Hldvelez Level 1 User (120 points) | 569 views
1 answer
2a^2+5ab-14b^2
asked May 17, 2013 in Algebra 1 Answers by anonymous | 642 views
2 answers
3ab+2ab-6ab+2ab-ab
asked Feb 5, 2021 in Other Math Topics by anonymous | 628 views
1 answer
hiw to solve 3AB
asked Oct 13, 2014 in Algebra 2 Answers by gaby | 1.4k views
1 answer
Solve the equation:30+3ab=0
asked Apr 23, 2014 in Algebra 1 Answers by anonymous | 548 views
1 answer
-3ab x 4a^2b
asked Aug 27, 2013 in Algebra 1 Answers by shazza Level 1 User (560 points) | 975 views
1 answer
simplify (3ab^3/8a^2b)(4ac/9b^4)
asked May 6, 2013 in Trigonometry Answers by anonymous | 779 views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. Solve 15 -1(12÷4+1)? (4)
  4. 8:4(5+2) (3)
  5. How can i represent 1/3; 3/3; 7/3; 10/3 and 15/3 on a number line? (1)

Most popular tags

87,516 questions
100,285 answers
2,420 comments
734,324 users