Advertisements
Advertisements
प्रश्न
Add the following expression:
− x2 − 3xy + 3y2 + 8, 3x2 − 5y2 − 3 + 4xy and − 6xy + 2x2 − 2 + y2
उत्तर
(− x2 − 3xy + 3y2 + 8) + (3x2 − 5y2 − 3 + 4xy) + (− 6xy + 2x2 − 2 + y2)
= − x2 − 3xy + 3y2 + 8 + 3x2 − 5y2 − 3 + 4xy − 6xy + 2x2 − 2 + y2
= − x2 + 3x2 + 2x2 − 3xy − 6xy + 4xy + 3y2 + y2 − 5y2 + 8 − 3 − 2
= 4x2 − 5xy − y2 + 3
APPEARS IN
संबंधित प्रश्न
Find the sum of a2 − ab + bc, 2ab + bc − 2a2 and − 3bc + 3a2 + ab.
Add the following expression:
− 17x2 − 2xy + 23y2, − 9y2 + 15x2 + 7xy and 13x2 + 3y2 − 4xy
Subtract:
2ab + cd − ac − 2bd from ab − 2cd + 2ac + bd.
From the sum of 3a – 2b + 4c and 3b – 2c subtract a – b – c.
Subtract x – 2y – z from the sum of 3x – y + z and x + y – 3z.
By how much should x + 2y – 3z be increased to get 3x?
The sum of two expressions is 3a2 + 2ab – b2. If one of them is 2a2 + 3b2, find the other.
Fill in the blanks:
1 × 8 = .............. and a2xy2 × 8a3x2y = ............
Fill in the blanks:
15 × 3 = .............. and 15x × 3x5y2 = ............
Fill in the blank:
− 5 × − 3x × 5x2 = ..................
