Question

1.(_-_)³=___³+___+___+___³=125x³-75x²y+15xy²-y³ 2.(5x+_)³= ___+___+___+___=___³+___+___²+64y³ 3.(3x_4y)³= lo necesito para hoy porfa

Answer 1

(5x - y)³

(5x)³ - 3(5x)²y + 3(5x)y² - y³

125x³- 75x²y +1 5xy² - y³

(5x+4y)³

(5x)³+ 2(5x)²(4y) + 3(5x)(4y)²+ (4y)³

125x³ + 200x²y +  240xy² + 64y³

(3x_4y)³

(3x)³ - 3(3x)²(4y) + 3(3x)(4y)² - (4y)³

27x³- 108x²y + 144xy² - 64y³

Eternamente axllxa