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प्रश्न
Use the direct method to evaluate the following products :
(3x – 2y) (2x + y)
उत्तर
(3x – 2y) (2x + y) = (3x × 2x) + (3x × y) + (−2y × 2x) + (−2y × y)
= 6x2 + 3xy − 4xy − 2y2
= 6x2 − xy − 2y2
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संबंधित प्रश्न
Evaluate the following using suitable identity:
(99)3
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`27p^3-1/216-9/2p^2+1/4p`
Write in the expanded form: (ab + bc + ca)2
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(x+3)3 + (x−3)3
Simplify of the following:
(2x − 5y)3 − (2x + 5y)3
If x = 3 and y = − 1, find the values of the following using in identify:
\[\left( \frac{x}{y} - \frac{y}{3} \right) \frac{x^2}{16} + \frac{xy}{12} + \frac{y^2}{9}\]
Find the square of `(3a)/(2b) - (2b)/(3a)`.
Expand the following:
(3x + 4) (2x - 1)
Simplify by using formula :
(5x - 9) (5x + 9)
Simplify:
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