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Express each of the products as a monomi...

Express each of the products as a monomials and verify the result in each case for `x=1:` `(3x)xx\ (4x)xx(-5x)`

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`(3x)xx\ (4x)xx(-5x)`
`(=-3xx4xx5)xx(x)xx(x)xx(x)`
`=-60xx(x^3)`
As x=1, we have `=-60xx1^3`
`=-60xx1`
`=-60`
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RD SHARMA-ALGEBRAIC EXPRESSIONS AND IDENTITIES-All Questions
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  8. E v a l u a t e\ (3. 2 x^6y^3)xx(2. 1 x^2y^2)w h e n\ x=1\ a n d\ y=0....

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  9. Find the value of (5x^6)xx\ (-1. 5 x^2y^3)xx(-12 x y^2)\ when\ x=1, y...

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  10. E v a l u a t e\ (2. 3 a^5b^2)xx(1. 2 a^2b^2)w h e n\ a=1\ a n d\ b=0....

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  11. Evaluate (-8x^2y^6)xx(\ -20 x y) for \ x=2. 5\ a n d\ y=1.

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  13. find the product of following (2/5a^2b)xx\ (-15 b^2a c)xx\ (-1/2c^2)

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  16. Evaluate each of the that when x=2, y=-1. (2x y)xx((x^2y)/4)xx(x^2)xx...

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  18. Multiply: 2x by (3x+5y)

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  19. Multiply: (7x y+5y) by 3x y

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  20. Multiply: -(3a b^2)/5\ by ((2a)/3-b)

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