Advertisements
Advertisements
Question
The sum of –7pq and 2pq is ______.
Options
–9pq
9pq
5pq
– 5pq
Advertisements
Solution
The sum of –7pq and 2pq is – 5pq.
Explanation:
Given, monomials are –7pq and 2pq.
∴ Their sum = –7pq + 2pq = (–7 + 2)pq ...[Both monomials consist of like terms, so adding their numerical coefficient]
= – 5pq
APPEARS IN
RELATED QUESTIONS
Simplify combining like terms: 3a - 2b - ab - (a - b + ab) + 3ab + b - a
Add the following algebraic expression:
4xy2 − 7x2y, 12x2y − 6xy2, − 3x2y +5xy2
Subtract:
2x3 − 4x2 + 3x + 5 from 4x3 + x2 + x + 6
Subtract 3x − 4y − 7z from the sum of x − 3y + 2z and − 4x + 9y − 11z.
Add: 7mn, 5mn
Find the sum of the following expressions
7p + 6q, 5p – q, q + 16p
Add the following expressions:
p2 – 7pq – q2 and –3p2 – 2pq + 7q2
Add the following expressions:
p2 – q + r, q2 – r + p and r2 – p + q
How much is y4 – 12y2 + y + 14 greater than 17y3 + 34y2 – 51y + 68?
At age of 2 years, a cat or a dog is considered 24 “human” years old. Each year, after age 2 is equivalent to 4 “human” years. Fill in the expression [24 + 
(a – 2)] so that it represents the age of a cat or dog in human years. Also, you need to determine for what ‘a’ stands for. Copy the chart and use your expression to complete it.
| Age | [24 +  (a – 2)] |
Age (Human Years) |
| 2 | ||
| 3 | ||
| 4 | ||
| 5 | ||
| 6 |
