Advertisements
Advertisements
प्रश्न
Add the following expression:
− x2 − 3xy + 3y2 + 8, 3x2 − 5y2 − 3 + 4xy and − 6xy + 2x2 − 2 + y2
Advertisements
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
Subtract the first term from the second:
`3 1/2"mn",8 1/2"nm"`
Find the sum of 4x2 + 7 − 3x, 4x − x2 + 8 and − 10 + 5x − 2x2.
Add the following expression:
− 17x2 − 2xy + 23y2, − 9y2 + 15x2 + 7xy and 13x2 + 3y2 − 4xy
Evaluate:
(8a + 15b) − (3b − 7a)
Take 5x + 6y − 3z from 3x + 5y − 4z.
From the sum of x + y – 2z and 2x – y + z subtract x + y + z.
From the sum of 3a – 2b + 4c and 3b – 2c subtract a – b – c.
The sum of two expressions is 5x2 – 3y2. If one of them is 3x2 + 4xy – y2, find the other.
Fill in the blanks:
6 × 3 = .............. and 6x × 3x = ............
Fill in the blanks:
6 × 2 = .............. and 6xy × 2xy = ............
