When 4 yz -9 zx -4 y and -3 yz -5 y -2 xz are added- we getA- y z-7 z x-yB- y z-7 z x-yC- -7 y z-11 z x-yD- - yz - zx - y

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Estimating Sum or Difference

When 4 yz +9 ...

Question

When $4 y z + 9 z x - 4 y$ and $- 3 y z + 5 y - 2 x z$ are added, we get

y z + 7 z x + y

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y z - 7 z x - y

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- 7 y z + 11 z x + y

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- y z + z x + y

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\frac{x (y + z - x)}{log x} = \frac{y (z + x - y)}{log y} = \frac{z (x + y - z)}{log z}

x^{y} y^{x} + z^{y} y^{z} - 2 x^{z} z^{x}

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