Advertisements
Advertisements
Question
Add the following expression:
− 17x2 − 2xy + 23y2, − 9y2 + 15x2 + 7xy and 13x2 + 3y2 − 4xy
Advertisements
Solution
(− 17x2 − 2xy + 23y2) + (− 9y2 + 15x2 + 7xy) + (13x2 + 3y2 − 4xy)
= − 17x2 − 2xy + 23y2 − 9y2 + 15x2 + 7xy + 13x2 + 3y2 − 4xy
= − 17x2 + 15x2 + 13x2 − 2xy − 4xy + 7xy + 23y2 + 3y2 − 9y2
= 11x2 + xy + 17y2
APPEARS IN
RELATED QUESTIONS
Find the sum of a2 − ab + bc, 2ab + bc − 2a2 and − 3bc + 3a2 + ab.
Add the following expression:
− x2 − 3xy + 3y2 + 8, 3x2 − 5y2 − 3 + 4xy and − 6xy + 2x2 − 2 + y2
Evaluate:
3a − (a + 2b)
Subtract:
5a − 3b + 2c from a − 4b − 2c.
Subtract:
− 8x − 12y + 17z from x − y − z.
Take 1 − a + a2 from a2 + a + 1.
Fill in the blanks:
6 × 3 = .............. and 6x × 3x = ............
Fill in the blanks:
12 × 4 = .............. and 12ax2 × 4ax = ............
Fill in the blank:
6 × 6x2 × 6x2y2 = ...................
Fill in the blank:
− 8x × − 3x = − ....................
