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ahussain14 ahussain14
  • 21-09-2014
  • Mathematics
Answered

Factor 40x^3-5y^3 COMPLETELY

Verified Answer :

Anonymous Anonymous
  • 22-09-2014

\(40x^3-5y^3=5(8x^3-y^3)=5[(2x)^3-y^3]\\\\use:a^3-b^3=(a-b)(a^2+ab+b^2)\\\\=5(2x-y)[(2x)^2+2xy+y^2]=5(2x-y)(4x^2+2xy+y^2)\)

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