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October 20, 2014

October 20, 2014

Posted by **Shane** on Tuesday, August 6, 2013 at 4:44pm.

- maths -
**Steve**, Tuesday, August 6, 2013 at 8:36pm(1-6x)^4

= 1^4 + 4*1^3(-6x)^1 + 6*1^2(-6x)^2 + 4(1^1(-6x)^3 + 1(-6x)^4

= 1-24x+216x^2-864x^3+...

(1+2x)^7 = 1+14x+84x^2+280x^3+...

Now just work from the left

1(1+14x+84x^2+280x^3)

-24x(1+14x+84x^2+280x^3)

+216x^2(1+14x+84x^2+280x^3)

-864x^3(1+14x+84x^2+280x^3)

...

1-10x-36x^2+424x^3+...

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