Advertisements
Advertisements
Question
Find the sum of x2 − x + 1, − 5x2 + 2x − 2 and 3x2 − 3x + 1
Advertisements
Solution
(x2 − x + 1) + (− 5x2 + 2x − 2) + (3x2 − 3x + 1)
= x2 − x + 1 − 5x2 + 2x − 2 + 3x2 − 3x + 1
= x2 + 3x2 − 5x2 + 2x − x − 3x + 1 + 1 − 2
= 4x2 − 5x2 + 2x − 4x + 2 − 2
= − x2 − 2x
APPEARS IN
RELATED QUESTIONS
Add the following expression:
a3 − 2b3 + a, b3 − 2a3 + b and − 2b + 2b3 − 5a + 4a3
Subtract:
− 8x − 12y + 17z from x − y − z.
Take `(-3)/2"p"+"q"-"r"` from `1/2"p"-1/3"q"-3/2"r".`
From the sum of x + y – 2z and 2x – y + z subtract x + y + z.
Subtract x – 2y – z from the sum of 3x – y + z and x + y – 3z.
Subtract the sum of x + y and x – z from the sum of x – 2z and x + y + z
The sum of two expressions is 5x2 – 3y2. If one of them is 3x2 + 4xy – y2, find the other.
Fill in the blank:
3ab × 6ax = ..................
Fill in the blank:
5 × 5a3 = ................
Fill in the blank:
6 × 6x2 × 6x2y2 = ...................
