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padilas [110]
2 years ago
13

Write the binomial expansion of (t-3)^5

Mathematics
1 answer:
postnew [5]2 years ago
5 0

Answer:

Step-by-step explanation:

(t-3)^5 is the same as (t + (-3))^5

First:  t starts at the highest power and goes down and (-3) starts at the lowest power and goes up

Second: from the Pascal triangles take the coefficients  1  5  10  10  5  1

1*t^{5} (-3)^{0} + 5*t^{4} (-3)^{1} +10*t^{3} (-3)^{2} +10*t^{2} (-3)^{3} +5*t^{1} (-3)^{4} +1*t^{0} (-3)^{5}

Anything to power 0 is equal to 1

Negative number to an odd power is negative, to a even power is positive

t^{5}  -15t^{4}  +90t^{3}  -270t^{2}  +405t  -243

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