Arizaviz
Arizaviz
Math
Answered
1.8k³+343b³=
2.8k³-343³=
Sagot :
AnneCviz
AnneCviz
[tex] a^{3} \pm b^{3} = (a\pm b)(a^2\mp ab+b^2)[/tex]
1) a=2k ; b=7b
[tex]8k^3+343b^3=\boxed{(2k+7b)(4k^2-17kb+49b^2)}[/tex]
2) a=2k ; b=343
[tex]8k^3-343^3=\boxed{(2k-343)(4k^2+686k+343^2)}[/tex]
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