3 years ago

Simplify the following expression: 7y +2x - 10y + 3x²-10x

Mathematics

1 answer:

arsen [322]3 years ago

4 0

-3y-8x+3x*2 (three x power 2)

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15 possible combinations

Step-by-step explanation:

Given

$Vegetables = 6$

$Selection = 2$

Required

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The question emphasizes on "selection" which means "combination".

So; To answer this question, we apply the following combination formula:

$^nC_r = \frac{n!}{(n-r)r!}$

In this case:

$n = 6$

$r = 2$

The formula becomes:

$^6C_2 = \frac{6!}{(6-2)!2!}$

$^6C_2 = \frac{6!}{4!2!}$

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$^6C_2 = 15$

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