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8r3 +125t6 what is the factor

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Riza1viz
[tex]8r^3 +125t^6= \\\\=2^3\cdot r^3 +5^3\cdot (t^2)^3=(2 r)^3 + (5t^2)^3 =\\\\=(2r+5t^2) [(2r)^2-2r\cdot 5t^2+(5t^2)^2 ]=\\\\=(2r+5t^2) (4r ^2-10r t^2+25t^4)[/tex]