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Geometric series question (1 Viewer)

Thread starter BlueGas
Start date Aug 23, 2015

BlueGas

Well-Known Member

#1

I just wanna know how did they get 1024x?

I

InteGrand

Well-Known Member

#2

BlueGas said:
I just wanna know how did they get 1024x?

$(-2)^{10}= 1024$

BlueGas

Well-Known Member

#3

InteGrand said:
$(-2)^{10}= 1024$

Ah okay, but howcome ^10 was there even after getting 1024?

I

InteGrand

Well-Known Member

#4

BlueGas said:
Ah okay, but howcome ^10 was there even after getting 1024?

$(-2x)^{10}=\underbrace{(-2)^{10}\times x^{10}}_{\text{using the index law }(ab)^r = a^r b^r} = 1024x^{10}$

BlueGas

Well-Known Member

#5

InteGrand said:
$(-2x)^{10}=(-2)^{10}\times (x)^{10} = 1024x^10$

Ohhh thanks man!

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