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2 years ago

13

Please help me

1 answer:

Furkat [3]2 years ago

8 0

9x^3-39x^2-38x+40=(3x-2)(3x+4)(x-5) by synthetic division
Thus roots are -4/3, 2/3, 5

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TanA+tanB+tanAtanB=1 If A+B=45 degree

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Answer:

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Question 13 (Essay Worth 8 points)

mixer [17]

9514 1404 393

Answer:

geometric sequence

Step-by-step explanation:

The terms of the sequence have a common ratio of -12/3 = -4, so the sequence is geometric. The general term is ...

an = 3(-4)^(n-1)

so the sum can be written as ...

$\displaystyle\sum_{n=0}^\infty3(-4)^n$

(Note the summation starts at n=0, corresponding to a first term of 3.)

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