hannhnstr
hannhnstr
21-03-2014
Mathematics
Answered
Y= x^3 + 64
Y=x^3 - 1000
Both need factored!
Answer :
Аноним
Аноним
21-03-2014
[tex]a^3\pm b^3=(a\pm b)(a^2\mp ab+b^2)[/tex]
[tex]y=x^3+64=x^3+4^3=(x+4)(x^2-4x+4^2)=(x+4)(x^2-4x+16)\\\\\\y=x^3-1000=x^3-10^3=(x-10)(x^2+10x+10^2)\\\\=(x-10)(x^2+10x+100)[/tex]
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