Question

(2x)³+(3y)³ using (a+b ) ( a²-ab+b²)

Answer 1

Answer:

(2x+3y)(4x²-6xy+9y²)

Step-by-step explanation:

(2x)³+(3y)³ compare with a³+b³;

a = 2x

b = 3y

Substituting,

(a+b)(a²-ab+b²) = (2x+3y)(4x²-6xy+9y²)

Answer 2

Answer:

Step-by-step explanation:

(2x)^3+(3y)^3

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

=(2x+3y){4x^2-6xy+9y^2}

=(2x+3y){4x^2-(3+3)xy+9y^2}

= (2x+3y){4x^2-3xy+3xy+9y^2}

= (2x+3y){x(4x-3y)+3y(x+3y)}