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प्रश्न
Solve:
(3x + 2y)(7x − 8y)
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उत्तर
(3x + 2y)(7x − 8y)
= 3x (7x − 8y) + 2y(7x − 8y)
= 21x2 − 24xy + 14xy − 16y2
= 21x2 − 10xy − 16y2
संबंधित प्रश्न
Find each of the following product: \[\left( \frac{4}{3}p q^2 \right) \times \left( - \frac{1}{4} p^2 r \right) \times \left( 16 p^2 q^2 r^2 \right)\]
Express each of the following product as a monomials and verify the result in each case for x = 1:
(4x2) × (−3x) × \[\left( \frac{4}{5} x^3 \right)\]
Find the value of (5x6) × (−1.5x2y3) × (−12xy2) when x = 1, y = 0.5.
Evaluate each of the following when x = 2, y = −1.
\[\left( \frac{3}{5} x^2 y \right) \times \left( - \frac{15}{4}x y^2 \right) \times \left( \frac{7}{9} x^2 y^2 \right)\]
Find the product −3y(xy + y2) and find its value for x = 4 and y = 5.
Multiply:
(a − 1) by (0.1a2 + 3)
Multiply:
(x6 − y6) by (x2 + y2)
(2xy + 3y2) (3y2 − 2)
Simplify:
(5x − 3)(x + 2) − (2x + 5)(4x − 3)
Show that: (a − b)(a + b) + (b − c)(b + c) + (c − a)( c + a) = 0
