Question

Read the question in the picture .

Answer 1

Formula:

${a}^{3} + {b}^{3} = (a + b)( {a}^{2} - ab + {b}^{2} )$

Here a = x and b = 3y

${x}^{3} + {(3y)}^{3} = (x + 3y)( {x}^{2} - 3xy + 9{y}^{2} )$

Hope this is helpful

Answer 2

Answer:

Formula:

{a}^{3} + {b}^{3} = (a + b)( {a}^{2} - ab + {b}^{2} )a

3

+b

3

=(a+b)(a

2

−ab+b

2

)

Here a = x and b = 3y

{x}^{3} + {(3y)}^{3} = (x + 3y)( {x}^{2} - 3xy + 9{y}^{2} )x

3

+(3y)

3

=(x+3y)(x

2

−3xy+9y

2

)

Hope this is helpful