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Mathematics 25 Online
Loli:

Find the next three terms of the sequence below: 2, -6, 18, -54, _____, _____, ______

HuskyNation:

there will be 2 positive numbers and one negative number

Nnesha:

do you know if its geometric or arithmetic ? here is the formula to find common ratio (Geometric ratio) \[\huge\rm r=\frac{a_2}{a_1}=\frac{a_3}{a_2}\] divide the term by the previous term and for common difference \[d=a_2-a_1=a_3-a_2\]

Nnesha:

for arithmetic sequence you use ^^ that last formula to find common difference

Nnesha:

in other words 2 times what =-6 or 2 + or - = -6

Hero:

@Loli 2 times -3 =?

Loli:

-1

Nnesha:

times = multiplication

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