Advertisements
Advertisements
प्रश्न
Evaluate :
3x2 + 5xy − 4y2 + x2 − 8xy − 5y2
Advertisements
उत्तर
3x2 + 5xy − 4y2 + x2 − 8xy − 5y2
= 3x2 + x2 + 5xy - 8xy − 4y2 − 5y2
= 4x2 − 3xy − 9y2
APPEARS IN
संबंधित प्रश्न
Evaluate :
−7x2 + 18x2 + 3x2 − 5x2
Add : a − 3b + 3; 2a + 5 − 3c; 6c − 15 + 6b
Add : x3 − x2y + 5xy2 + y3, - x3 − 9xy2 + y3, 3x2y + 9xy2
Find the total savings of a boy who saves ₹ (4x – 6y), ₹ (6x + 2y), ₹ (4y – x) and ₹ (y – 2x) for four consecutive weeks.
Subtract : 3a − 5b + c + 2d from 7a − 3b + c − 2d
Subtract : a2 + ab + b2 from 4a2 − 3ab + 2b2
Subtract the sum of 5y2 + y – 3 and y2 – 3y + 7 from 6y2 + y – 2.
What must be added to x4 – x3 + x2 + x + 3 to obtain x4 + x2 – 1 ?
The perimeter of a triangle is 8y2 – 9y + 4 and its two sides are 3y2 – 5y and 4y2 + 12. Find its third side.
The two adjacent sides of a rectangle are 2x2 – 5xy + 3z2 and 4xy – x2 – z2. Find its perimeter.
