Question

Найдите значение выражения:

Answer 1

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Answer 2

$\frac{8x^{3}+y^{3} }{4x^{2}-2xy+y^{2}} +\frac{8x^{3}-y^{3} }{4x^{2}+2xy+y^{2}} =\frac{(2x+y)(4x^{2}-2xy+y^{2}) }{4x^{2}-2xy+y^{2}} +\frac{(2x-y)(4x^{2}+2xy+y^{2})}{4x^{2}+2xy+y^{2}}=\\\\ = 2x+y+2x-y=4x\\ \\  x=-0,5\\     4*(-0.5)= -2$