Advertisements
Advertisements
Question
If A = 3x2 – 4x + 1, B = 5x2 + 3x – 8 and C = 4x2 – 7x + 3, then find:
A + B + C
Sum
Advertisements
Solution
Given, A = 3x2 – 4x + 1, B = 5x2 + 3x – 8 and C = 4x2 – 7x + 3
A + B + C = 3x2 – 4x + 1 + 5x2 + 3x – 8 + 4x2 – 7x + 3
On combining the like terms,
= 3x2 + 5x2 + 4x2 – 4x + 3x – 7x + 1 – 8 + 3
= 12x2 – 8x – 4
shaalaa.com
Is there an error in this question or solution?
Chapter 10: Algebraic Expressions - Exercise [Page 322]
APPEARS IN
RELATED QUESTIONS
Subtract the second expression from the first.
(4x + 16z); (19y − 14z + 16x)
Solve:
(7m − 5n) − (−4n − 11m)
Subtract 5x2 – 4y2 + 6y – 3 from 7x2 – 4xy + 8y2 + 5x – 3y.
Subtract: 13x + 12y – 5 from 27x + 5y – 43
Subtract: m + n from 3m – 7n
Subtract: 2y + z from 6z – 5y
Subtract:
2ab2c2 + 4a2b2c – 5a2bc2 from –10a2b2c + 4ab2c2 + 2a2bc2
Subtract the following expressions:
–4x2y – y3 from x3 + 3xy2 – x2y
Subtract the following expressions:
ab – bc – ca from –ab + bc + ca
Subtract 9a2 – 15a + 3 from unity.
