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3 years ago

How do I solve (z+7)^2=3

1 answer:

4 0

(z+7)^2=3
z^2+14z+46=0
z={-14+-√(14^2-4.1.46)}/2.1
=-14+-√(196-184)/2
=-14+-√12/2
=-14+-2√3/2
=-7+-√3
so it is,
z=-7+√3
or,
z=-7-√3

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3 years ago

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3 years ago

given that a1=5 and a2=15 are the first two terms of a geometric sequence, determine the values of a3 and a10. Show the calculat

Alekssandra [29.7K]

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Step-by-step explanation:

Given

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a_2 = 15

First of all we have to calculate the common ratio of the sequence. The common ratio is the ratio between two consecutive terms of a geometric sequence.

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Keywords: Geometric sequence, Explicit formula

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3 years ago

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2 years ago

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2 years ago