Question

125x^3 -27^3 solve this

using method a^3 + b^3 = (a+b) (a^2-ab+b^2) solve with this method please ​

Answer 1

Answer:

$= 125 {x}^{3 } - {27}^{3}$

$we \: know \: {a}^{3} - {b}^{3} = (a - b)( {a}^{2} + ab + {b}^{2} )$

$= {(5x})^{3} - ( {3})^{3}$

$= (5x - 3)(( {5x})^{2} + 5x \times 3 + {3}^{2} )$

$= (5x - 3)(25 {x}^{2} + 15x + 9)$