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atroni [7]
3 years ago
11

Soooo Hard Please someone help me

Mathematics
1 answer:
Alisiya [41]3 years ago
8 0

\frac{1}{2} ( \frac{2}{3}  +  \frac{3}{4}) \\  =  \frac{1}{2}  ( \frac{2 \times 4}{3 \times 4}  +  \frac{3 \times 3}{4 \times 3} ) \\  =  \frac{1}{2} ( \frac{8}{12}  +  \frac{9}{12} ) \\  =  \frac{1}{2} ( \frac{8 + 9}{12} ) \\   = \frac{1}{2} ( \frac{17}{12} ) \\  =  \frac{1 \times 17}{2 \times 12}  \\  =  \frac{17}{24}
The answer is 17/24
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Read 2 more answers
Plzz help me to find coefficient in binomial theorem (25 points)
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<em>Denote x2 by y. </em>

<em>  </em>

<em>(x2-3)7=(y-3)7 </em>

<em>  </em>

<em>This is a binomial expansion in y, and you want the coefficient of y4 because y4=x8 </em>

<em>  </em>

<em>You have 7 terms of (y-3) in (y-3)7.  To get the fourth power of y, you need to choose y from four of the terms.  The number of ways you can do this is the combinations of 7 things taken 4 at a time.  This is: </em>

<em>  </em>

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<em />

<em>So, the coefficient of x8 in the given expansion will be 210.</em>

<em>HOPE IT HELPS</em>

<em>THANK YOU </em>

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