Advertisements
Advertisements
प्रश्न
If m = 9x2 - 4xy + 5y2 and n = - 3x2 + 2xy - y2 find: m - 3n
Advertisements
उत्तर
m = 9x2 - 4xy + 5y2
n = - 3x2 + 2xy - y2
∴ m - 3n
= (9x2 - 4xy + 5y2) - 3 (- 3x2 + 2xy - y2)
= 9x2 - 4xy + 5y2 + 9x2 - 6xy + 3y2
= 18x2 - 10xy + 8y2
APPEARS IN
संबंधित प्रश्न
Find the excess of 4m2 + 4n2 + 4p2 over m2+ 3n2 – 5p2
The perimeter of a triangle is 14a2 + 20a + 13. Two of its sides are 3a2 + 5a + 1 and a2 + 10a – 6. Find its third side.
Simplify: 3(4y - 10) 2(y - 1)
Multiply: 6xy2 - 7x2y2 + 10x3 and - 3x2y3
Copy and complete the following multi-plication:
2a - b + 3c
× 2a - 4b
Copy and complete the following multiplication:
4x3 − 10x2 + 6x − 8
× 3 + 2x − x2
Evaluate: (3x - 2y)(4x + 3y)
Simplify: `"k + 1"/2 + "2k - 1"/3 - "k + 3"/4`
Simplify: `(2"p" + "p"/7) div ("9p"/10 + "4p")`
Simplify: `("5k"/8 - "3k"/5) div "k"/4`
