Answers

2014-06-17T13:07:04+05:30
1) 27y³ - 125z³
(3y)³ - (5z)³
(3y - 5z)(9y² + 15yz + 25z²)                          [By using a³ - b³ = (a - b)(a² + ab + b²)]

2) 64x³y³ + 27z³
(4xy)³ + (3z)³
(4xy + 3z)(16x²y² - 12xyz + 9z²)                   [By using a³ + b³ = (a + b)(a² - ab + b²)]

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