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Multiplication of Any Polynomial

The product o...

Question

The product of $(t + s^{2})$ and $(t^{2} - s)$ is:

A

+ - st -

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B

+ - st -

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C

+ - 2st -

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D

+ - st -

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Solution

The correct option is A
+ - st -

$(t + s^{2}) (t^{2} - s)$

$\Rightarrow t^{3} - t s + s^{2} t^{2} - s^{3}$

$\Rightarrow t^{3} + s^{2} t^{2} - s t - s^{3}$

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