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If A = 3x^(2) + 2x - 7 and B = 7x^(3) -...

If A = `3x^(2) + 2x - 7` and B = `7x^(3) - 3x + 4` , then find :
2A - 3B

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The correct Answer is:
`-21 x^(3) + 6x^(2) + 13x - 26`
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PEARSON IIT JEE FOUNDATION-EXPRESSIONS AND SPECIAL PRODUCTS -Short Answer Type Questions
  1. If A = 3x^(2) + 2x - 7 and B = 7x^(3) - 3x + 4 , then find : A - B

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  2. If A = 3x^(2) + 2x - 7 and B = 7x^(3) - 3x + 4 , then find : 2A + 3...

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  3. If A = 3x^(2) + 2x - 7 and B = 7x^(3) - 3x + 4 , then find : 2A - 3...

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  4. Find the products for the following : (3x + 2) ( x + 3)

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  5. Find the products for the following : (x-5) ( x + 6)

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  6. Find the product of 5x^(2) - 7x + 6 and 3x and verify it when x = -2 .

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  7. Find the product of (3x - 7) (4x + 6) and verify it when x = 1.

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  8. By using an appropriate identity , expand the following : (3x + 4y)...

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  9. By using an appropriate identity , expand the following : (5x + (1)...

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  10. By using an appropriate identity , expand the following : ( x - 2y)...

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  11. By using an appropriate identity , expand the following : (3x - (1)...

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  12. By using an appropriate identity , expand the following : (x + 2y) ...

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  13. By using an appropriate identity , expand the following : (x + y) (...

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  14. By using an appropriate identity , find the following : (102)^(2)

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  15. By using an appropriate identity , find the following : (54)^(2)

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  16. By using an appropriate identity , find the following : (10(1)/(4))^...

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  17. By using an appropriate identity , find the following : (95)^(2)

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  18. By using an appropriate identity , find the following : (28)^(2)

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  19. By using an appropriate identity , find the following : (9(1)/(2))^(...

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  20. By using an appropriate identity , find the following : 89 xx 111

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