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प्रश्न
Evaluate: (3x - 2y)(4x + 3y) (8x - 5y)
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उत्तर
(3x - 2y)(4x + 3y)(8x - 5y)
= 3x (4x + 3y) - 2y (4x + 3y)(8x - 5y)
= (12x2 + 9xy - 8xy - 6y2 )(8x - 5y)
= (12x2 + xy - 6y2 )(8x - 5y)
= 8x (12x2 + xy - 6y2 ) - 5y (12x2 + xy - 6y2 )
= 96x3 + 8x2y - 48xy2 - 60x2y - 5xy2 + 30y3
= 96x3 + 8x2y - 60x2y - 48xy2 - 5xy2 + 30y3
= 96x3 - 52x2y - 53xy2 + 30y3
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संबंधित प्रश्न
Subtract: a2 - 3ab - 6b2 from 2b2 - a2 + 2ab
Subtract: 6m3 + 4m2 + 7m - 3 from 3m3 + 4
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: 4x + 7y - (5y - 8) - 2x
Simplify: 2(x - y) - (x - 8)
Multiply: 9xy + 2y2 and 2x - 3y
Copy and complete the following multi-plication:
3a + 2b
× - 3xy
Copy and complete the following multi-plication:
3m2 + 6m - 2n
× 5n - 3m
Simplify: `"y"/5 + "y" - "19y"/15`
Simplify: `7/30 "of" ("p"/3 + "7p"/15)`
