lizilizi28
muliply (x^2 + y^5)(x^2 + -y^5)
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timo86m
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distribute
timo86m
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|dw:1364185892851:dw|
timo86m
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x^4-y^10
timo86m
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if
(a+b)*(c+d) = (x^2 + y^5)(x^2 + -y^5)
a b c d
then
a*c+a*d+b*c+b*d
pangyaPrince
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make it simple by letting
x^2 = a
y^5 = b
so you have:
(a+b)(a-b)
then use distribution method. after getting the answer, substitute the values to a and b.
jim_thompson5910
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this is another difference of squares problem
(a+b)(a-b) = a^2 - b^2
timo86m
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didn't catch that lol but my way will still solve it