Advertisements
Advertisements
Question
The sum of two expressions is 3a2 + 2ab – b2. If one of them is 2a2 + 3b2, find the other.
Sum
Advertisements
Solution
(3a2 + 2ab − b2) − (2a2 + 3b2)
= 3a2 + 2ab − b2 − 2a2 − 3b2
= 3a2 − 2a2 + 2ab − b2 − 3b2
= a2 + 2ab − 4b2
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Subtract the first term from the second:
4.8b, 6.8b
Find the sum of x2 − x + 1, − 5x2 + 2x − 2 and 3x2 − 3x + 1
Find the sum of 3x + 4xy − y2, xy − 4x + 2y2 and 3y2 − xy + 6x.
Evaluate:
(5x − 3y) − (x + y)
Subtract:
4x − 6y + 3z from 12x + 7y − 21z.
Take 5x + 6y − 3z from 3x + 5y − 4z.
Fill in the blanks:
1 × 8 = .............. and a2xy2 × 8a3x2y = ............
Fill in the blanks:
15 × 3 = .............. and 15x × 3x5y2 = ............
Fill in the blank:
6 × 6x2 × 6x2y2 = ...................
Fill in the blank:
− 5 × − 3x × 5x2 = ..................
