8 -3-753-1-7-52-6-5 is equal to

The correct option is A 8.5 8×(3.75)^3+1/(7.5^2 6.5)=a^3+b^3/a^2 ab+b^2 = 8.5 ...

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Byju's Answer

Standard VIII

Mathematics

Expansion of (x+y)^3

8 ×3.753+1/7....

Question

$\frac{8 \times (3.75)^{3} + 1}{({7.5}^{2} - 6.5)} i s e q u a l t o$

1.8

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2.75

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4.75

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8.5

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Solution

The correct option is
A

8.5

$\frac{8 \times (3.75)^{3} + 1}{({7.5}^{2} - 7.5 \times 1 + 1^{2})} = \frac{a^{3} + b^{3}}{a^{2} - a b + b^{2}} = 8.5$

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8×(3.75)3+1(7.52−6.5) is equal to

The correct option is A 8.58×(3.75)3+1(7.52−7.5×1+12)=a3+b3a2−ab+b2 = 8.5

$\frac{8 \times (3.75)^{3} + 1}{({7.5}^{2} - 6.5)} i s e q u a l t o$

The correct option is
A

8.5

$\frac{8 \times (3.75)^{3} + 1}{({7.5}^{2} - 7.5 \times 1 + 1^{2})} = \frac{a^{3} + b^{3}}{a^{2} - a b + b^{2}} = 8.5$