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Find and correct the errors in the follo...

Find and correct the errors in the following mathematical statement
`4(x-5)=4x-5`

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The correct Answer is:
4x-20
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SWAN PUBLICATION-FACTORISATION-EXERCISE 14.4
  1. Find and correct the errors in the following mathematical statement ...

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  2. Find and correct the errors in the following mathematical statement ...

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  3. Find and correct the errors in the following mathematical statement ...

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  4. Find and correct the errors in the following mathematical statement ...

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  5. Find and correct the errors in the following mathematical statement ...

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  6. Find and correct the errors in the following mathematical statement ...

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  7. Find and correct the errors in the following mathematical statement ...

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  8. Find and correct the errors in the following mathematical statement ...

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  9. Find and correct the errors in the following mathematical statement ...

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  10. Substituting x =-3 in x^2+5x+4 gives, (-3)^2+5(-3)+4=9+2+4 = 15 Find...

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  11. Substituting x =-3 in x^2-5x+4 gives: (-3)^2-5(-3)+4=9-15+4=-2. Find a...

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  12. Substituting x =-3 in: x^2+5x gives: (-3)^2+5(-3)=-9-15=-24. Find and ...

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  13. (y-3)^(2)=y^(2)-9

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  14. (z+5)^(2)=z^(2)+25

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  15. check and make correct if required:(2a+3b)(a-b)=2a^(2)-3b^(2)

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  16. Find and correct the error: (a+4)(a+2) = a^2+ 8

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  17. (a-4)(a-2)=a^(2)-8

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  18. (5x^(2))/(5x^(2))=0

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  19. Find and correct the error: (3x^2+1)/(3x^2) =1+1=2

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  20. (3x)/(3x+2)=1/4

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