The correct option is B 0.09 (0.5)^4 (0.4)^4/(0.5)^2+(0.4)^2=((0.5)^2+(0.4)^2)((0.5)^2 (0.4)^2)/((0.5)^2+(0.4)^2)=0.09 ...

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Algebraic Identities

0.54-0.44/0.5...

Question

$\frac{(0.5)^{4} - (0.4)^{4}}{(0.5)^{2} + (0.4)^{2}} =$

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0.0009

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0.009

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0.09

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Solution

The correct option is D
0.09

$\frac{(0.5)^{4} - (0.4)^{4}}{(0.5)^{2} + (0.4)^{2}} = \frac{((0.5)^{2} + (0.4)^{2}) ((0.5)^{2} - (0.4)^{2})}{((0.5)^{2} + (0.4)^{2})} = 0.09$

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Similar questions

0.54 \times 0.54 - 0.46 \times 0.46

y = \frac{(0.42)^{3} + (0.25)^{3} + (0.33)^{3} - 3 \times 0.42 \times 0.25 \times 0.33}{(0.42)^{2} + (0.25)^{2} + (0.33)^{2} - 0.42 \times 0.25 - 0.25 \times - 0.33 \times 0.42}

y

E_{I_{2} / I^{-}}^{\circ}, E_{B r^{-} / B r_{2}}^{\circ} and E_{F e / F e^{2 +}}^{\circ}

+ 0.54 V

- 1.09 V

0.44 V

0.54 \times 0.54 - 0.46 \times 0.46

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