<em>Denote x2 by y.
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<em> </em>
<em>(x2-3)7=(y-3)7
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<em> </em>
<em>This is a binomial expansion in y, and you want the coefficient of y4 because y4=x8
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<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:
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<em> </em>
<em>7!/(4!3!)=35</em>
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<em>So, the coefficient of x8 in the given expansion will be 210.</em>
<em>HOPE IT HELPS</em>
<em>THANK YOU </em>
Answer:
Manual Override??
Step-by-step explanation: I'm prop wrong
Answer:
Alrighty so number one is <em>5
z (x + 2y)</em>, and number two is <em>13x + 19y - 34z</em>
T-m=25
3m=J
275=t+j+m
Matt spent 50 dollars
Jeff spent 150
and Tim spent 75
