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प्रश्न
Find the total savings of a boy who saves ₹ (4x – 6y), ₹ (6x + 2y), ₹ (4y – x) and ₹ (y – 2x) for four consecutive weeks.
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उत्तर
4x − 6y
6x + 2y
–x + 4y
–2x + y
7x + y
∴ Total saving = ₹(7x + y)
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संबंधित प्रश्न
Evaluate :
3x2 + 5xy − 4y2 + x2 − 8xy − 5y2
Add : 8x − 3y + 7z, −4x + 5y − 4z, −x − y − 2z
Add : 13ab − 9cd − xy, 5xy, 15cd − 7ab, 6xy − 3cd
Add : x3 − x2y + 5xy2 + y3, - x3 − 9xy2 + y3, 3x2y + 9xy2
Subtract : a2 + ab + b2 from 4a2 − 3ab + 2b2
Take away – 3x3 + 4x2 – 5x+ 6 from 3x3 – 4x2 + 5x – 6
If x = 6a + 8b + 9c ; y = 2b – 3a – 6c and z = c – b + 3a ; find :
- x + y + z
- x – y + z
- 2x – y – 3z
- 3y – 2z – 5x
The sides of a triangle are x2 – 3xy + 8, 4x2 + 5xy – 3 and 6 – 3x2 + 4xy. Find its perimeter.
The two adjacent sides of a rectangle are 2x2 – 5xy + 3z2 and 4xy – x2 – z2. Find its perimeter.
How much bigger is 5x2y2 – 18xy2 – 10x2y than –5x2 + 6x2y – 7xy?
