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Find 4x xx 5 y xx 7z First find 4x xx...

Find `4x xx 5 y xx 7z`
First find `4x xx 5y ` and multiple it by 7z
or first find `5y xx 7z ` and multiply it by 4x
Is the result the same ? What do oyu observe ?
Does the order in which you carry out the multiplication matter ?

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NAND LAL PUBLICATION-ALGEBRAIC EXPRESSIONS AND IDENTITIES -TRY THESE
  1. Find the value of the expression 2y - 5, for the given values of y i.e...

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  2. Give five examples of expressions containing one variable and five exa...

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  3. Show on the number line x,x-4,2x + 1,3x -2.

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  4. Classify the following polynomials as monomials, binomials, trinomials...

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  5. Construct: 3 binomials with only x as a varialble.

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  6. Construct: 3 binomials with x and y as variables.

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  7. Construct: 3 monomials with x and y as variables.

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  8. Construct: 2 polynomials with 4 or more terms.

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  9. Write two terms which are like 7xy

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  10. Write two terms which are like 4 mn ^(2)

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  11. Write two terms which are like : 2l.

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  12. Can you think of two more such situations., where we may need to multi...

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  13. Find 4x xx 5 y xx 7z First find 4x xx 5y and multiple it by 7z o...

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  14. Obtain the product of 2x (3x + 5 xy)

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  15. Obtain the product of a ^(2) ( 2 ab - 5c)

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  16. Find the product: (4p^2 +5p +7)xx3p.

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  17. Verify identify(IV) for a =2,b=3,x=5.

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  18. Consider,the special case of identity (iv) with a=b,what do you get?Is...

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  19. Consider,the special case of identity (iv) with a=-c and b = -c.What d...

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  20. Consider the special case of identity(iv) with b=-a.What do you get ?I...

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