Advertisements
Advertisements
Question
Simplify combining like terms: (3y2 + 5y - 4) - (8y - y2 - 4)
Advertisements
Solution
(3y2 + 5y - 4) - (8y - y2 - 4)
= 3y2 + 5y - 4 - 8y + y2 + 4
= 3y2 + y2 + 5y - 8y - 4 + 4
= y2 (3 + 1) + y(5 - 8) + 4 (1 - 1)
= 4y2 - 3y
RELATED QUESTIONS
Subtract: a (b - 5) from b (5 - a)
Add the following algebraic expression:
\[\frac{2}{3}a, \frac{3}{5}a, - \frac{6}{5}a\]
Subtract:
2x3 − 4x2 + 3x + 5 from 4x3 + x2 + x + 6
Subtract:
\[x^2 y - \frac{4}{5}x y^2 + \frac{4}{3}xy \text { from } \frac{2}{3} x^2 y + \frac{3}{2}x y^2 - \frac{1}{3}xy\]
Add:
17a2b2 + 16c; 28c − 28a2b2
Sum of 2 and p is 2p.
Sum of x2 + x and y + y2 is 2x2 + 2y2.
Add the following expressions:
p2qr + pq2r + pqr2 and – 3pq2r – 2pqr2
Add the following expressions:
uv – vw, vw – wu and wu – uv
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 |
