Question

(2x² -y)³ -64y³

 

Answer 1

(2x² - y)³ - 64y³ = (2x² - y - 4y) [ (2x² - y)² + (2x² - y).4y + 16y² ] 

= (2x² - 5y) (4x² - 4x²y + y² + 8x²y - 4y² + 16y²)

= (2x² - 5y) (4x² + 4x²y + 13y²)

Answer 2

(2x²-y)³-64y³=(2x²-y-4y)(2x²-y+4y)

                  =(2x²-5y)(2x²+3y)

Answer 3

xin lỗi nhé mik lm lộn

(2x²-y)³-64y³=(2x²-y-4y)[(2x²-y)²+(2x²-y)4y+16y²]

                        =(2x^{2 -} 5y) (4x⁴ - 4x²y + y² + 8x²y - 4y²+16y²)

                       =(2x² - 5y) (4x⁴+4x²y+17y²)

Answer 4

Diệp Thảo Chi saai nhé , y^2+16y^2-4y^2=13y^2