Advertisements
Advertisements
Question
Multiply the following:
–3x2y, (5y – xy)
Sum
Advertisements
Solution
We have,
–3x2y and (5y – xy)
∴ –3x2y × (5y – xy) = –3x2y × 5y + 3x2y × xy
= –15x2y2 + 3x3y2
shaalaa.com
Is there an error in this question or solution?
Chapter 7: Algebraic Expression, Identities and Factorisation - Exercise [Page 230]
APPEARS IN
RELATED QUESTIONS
Complete the table of products.
|
First monomial→ |
2x |
–5y |
3x2 |
–4xy |
7x2y |
–9x2y2 |
|
Second monomial ↓ |
||||||
| 2x | 4x2 | ... | ... | ... | ... | ... |
| –5y | ... | ... | –15x2y | ... | ... | ... |
| 3x2 | ... | ... | ... | ... | ... | ... |
| – 4xy | ... | ... | ... | ... | ... | ... |
| 7x2y | ... | ... | ... | ... | ... | ... |
| –9x2y2 | ... | ... | ... | ... | ... | ... |
Obtain the volume of a rectangular box with the following length, breadth, and height, respectively.
5a, 3a2, 7a4
Express each of the following product as a monomials and verify the result for x = 1, y = 2:
(−xy3) × (yx3) × (xy)
Multiply: 2a2 − 5a − 4 and −3a
Multiply: 5a − 1 by 7a − 3
Multiply: 2m2 − 3m − 1 and 4m2 − m − 1
Multiply: −3bx, −5xy and −7b3y2
Multiply: `2"x"+1/2"y"` and `2"x"-1/2"y"`
Area of a rectangle with length 4ab and breadth 6b2 is ______.
Multiply the following:
15xy2, 17yz2
