Advertisements
Advertisements
Question
Subtract:
2a2 from − 7a2
Advertisements
Solution
\[- 7 a^2 - \left( 2 a^2 \right)\]
\[ = - 7 a^2 - 2 a^2 \]
\[ = - 9 a^2\]
APPEARS IN
RELATED QUESTIONS
Subtract 4p2q − 3pq + 5pq2 − 8p + 7q − 10 from 18 − 3p − 11q + 5pq − 2pq2 + 5p2q
Subtract: -x2 + 10x - 5 from 5x - 10
Subtract: 5a2 - 7ab + 5b2 from 3ab - 2a2 -2b2
Subtract:
2a − b from 3a − 5b
Subtract 3x − 4y − 7z from the sum of x − 3y + 2z and − 4x + 9y − 11z.
If \[x + \frac{1}{x} = 20,\]find the value of \[x^2 + \frac{1}{x^2} .\].
The additive inverse of −37xyz is ___________
The sum of –7pq and 2pq is ______.
Write two different algebraic expressions for the word phrase “`(1/4)` of the sum of x and 7.”
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 |
