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If a\ a n d\ b are different positive pr...

If `a\ a n d\ b` are different positive primes such that `(i)\ ((a^(-1)\ b^2)/(a^2b^(-4)))^7-:((a^3\ b^(-5))/(a^(-2)b^3))=a^x b^y ,` find `x\ a n d\ y` `(ii)\ (a+b)^(-1)\ (a^(-1)+b^(-1))=\ a^x b^y ,` find `x+y+2`

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RD SHARMA ENGLISH-EXPONENTS OF REAL NUMBER-All Questions
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  2. If a and b are distinct positive primes such that root(3)(a^6b^(-4))...

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  3. If a\ a n d\ b are different positive primes such that (i)\ ((a^(-1)\ ...

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  4. If 2^x\ 3^y\ 5^z=2160\ , find x ,\ y\ a n d\ z . Hence, compute the va...

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  5. If 1176=2^a xx\ 3^bxx\ 7^c , find the values of a ,\ b\ a n d\ c . Hen...

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  6. Simplify: (i)\ ((x^(a+b))/(x^c))^(a-b)\ ((x^(b+c))/(x^a))^(b-c)\ ((x^...

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  7. Show that: ((a+1/b)^m xx\ (a-1/b)^n)/((b+1/a)^m\ xx\ (b-1/a)^n)=(a/b)^...

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  8. If a=x^(m+n)\ y^l,\ b=x^(n+l)\ y^m and c=x^(l+m)y^n , prove that a^(m-...

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  9. If x=a^(m+n),\ y=a^(n+l) and z=a^(l+m) , prove that x^m y^n z^l=x^n y^...

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  10. Write (625)^(-1/4) in decimal form

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  11. State the product law of exponents.

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  12. State the power law of exponents

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  13. For any positive real number x , find the value of ((x^a)/(x^b))^(a+b)...

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  14. Write the value of {5"("8^(-1/2)"}"^(-1/4)}^2

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  15. For any positive real number x;write the value of {(x^a)^b}^(1/(ab)) {...

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  16. If (x-1)^3=8, what is the value of (x+1)^2\ ?

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  17. If 2^4\ xx\ 4^2=16^x , then find the value of x ?

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  18. If 3^(x-1)=9 and 4^(y+2)=64 , what is the value of x/y\ ?

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  19. Write the value of root(3)(7)\ xx\root(3)( 49)

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  20. Write (1/9)^(-1/2)\ xx\ (64)^(-1/3) as a rational number.

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