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If 16x^2+9y^2 +4z^2= 24(x-y+z)-61, then ...

If `16x^2+9y^2 +4z^2= 24(x-y+z)-61`, then the value of (xy + 2z) is :
यदि `16x^2+9y^2 +4z^2= 24(x-y+z)-61` है, तो (xy + 2z) का मान क्या होगा ?

A

1

B

2

C

3

D

5

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PINNACLE-ALGEBRA-EXERCISE
  1. If x+y+z=19, x^2+y^2+z^2=133 and xz=y^2, then the difference between z...

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  2. If x^4+x^(-4)=194, x succ 0 then the value of (x-2)^2 is: यदि x^4+x...

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  3. If 16x^2+9y^2 +4z^2= 24(x-y+z)-61, then the value of (xy + 2z) is : ...

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  4. If x + y + z = 19, xy + yz + zx = 114, then the value of sqrt(x^3+y^3+...

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  5. If [8(x+y)^3- 27(x-y)^3] div (5y-x) = Ax^2+Cy^2+Bxy, then the value of...

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  6. If a^2+b^2+64c^2+16c + 3=2 (a+b), then the value of 4a^7+b^7+8c^2 is ...

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  7. If x + y = 1 and xy(xy - 2) = 12, then the value of x^4+y^4 is: यदि ...

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  8. If ab + bc + ca = 8 and a^2+b^2+c^2=20, then a possible value of 1/2 (...

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  9. If x = a +1/a and y=a-1/a then sqrt(x^4+ y^4-2x^2y^2) is equal to : ...

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  10. If 2x^2+y^2+6x-2xy+9=0, then the value of 4x^3-y^3+x^2y^2 is: यदि 2x...

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  11. If x + y = 12 and xy = 27, x > y, then the value of (x^3-y^3) is: यद...

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  12. If x^2+y^2+z^2=133,xy +yz + zx = 114 and xyz = 216, then the value of ...

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  13. If a+1/a=3, then (a^4+1/a^4) is equal to : यदि a+1/a=3 है, तो (a^...

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  14. If x^4-6x^2-1=0, then the value of x^6- 5x^2+5/x^2-1/x^6+5= ? यदि x^...

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  15. If x = 2 - p , then x^3+6xp+p^3, is equal to: यदि x = 2 - p है, तो x...

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  16. If 9a^2+4b^2+c^2+21= 4(3a + b - 2c), then the value of (9a + 4b - c) i...

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  17. If x^2-3x-1=0, then the value of (x^2+ 8x-1)(x^3+x^(-1))^-1 is: यदि ...

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  18. If (6x)/(2x^2+5x-2)=1, x > 0 , then the value of x^3+1/x^3 is: यदि(6...

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  19. If 4x^2-6x+1=0, then the value of 8x^3 +(8x^3)^-1 is: यदि 4x^2-6x+1...

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  20. If x + y + z = 0 , then the value of (x^2+y^2 +z^2) div (z^2-xy) is : ...

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