Advertisements
Advertisements
Question
Add the following expressions:
ab + bc + ca and – bc – ca – ab
Solution
We have, ab + bc + ca + (– bc – ca – ab)
= ab + bc + ca – bc – ca – ab
On combining the like terms
= ab – ab + bc – bc + ca – ca
= 0 + 0 + 0
= 0
APPEARS IN
RELATED QUESTIONS
Simplify combining like terms: - z2 + 13z2 − 5z + 7z3 − 15z
What should be added to x2 + xy + y2 to obtain 2x2 + 3xy?
Subtract:
\[\frac{ab}{7} - \frac{35}{3}bc + \frac{6}{5}ac \text { from } \frac{3}{5}bc - \frac{4}{5}ac\]
Add:
9p + 16q; 13p + 2q
Find the sum of the following expressions
a + 5b + 7c, 2a + 10b + 9c
The sum of –7pq and 2pq is ______.
Add:
2p4 – 3p3 + p2 – 5p + 7, –3p4 – 7p3 – 3p2 – p – 12
Add:
3a(a – b + c), 2b(a – b + c)
What should be added to 3pq + 5p2q2 + p3 to get p3 + 2p2q2 + 4pq?
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 + `square` (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 + `square` (a – 2)] | Age (Human Years) |
| 2 | ||
| 3 | ||
| 4 | ||
| 5 | ||
| 6 |
