Question

simplyfy (2x-5y)³-(2x+5y)³​

Answer 1

(2x-5y)³-(2x+5y)³

a³-b³ = (a-b)(a²+b²+ab)

=> (2x-5y-2x-5y)[{2x-5y}²+{2x+5y}²+(2x-5y)(2x+5y)]

=> -10y(4x²+25y²-20xy+ 4x²+25y²+20xy+4x²-25y²)

(a+b)(a-b) = a²-b²

-10y(12x²+25y²)

Hope it helps

Answer 2

♥♥♥heya mate♥♥

• 4x^3-25y^3-3(2x)(5y) [2x-5y] -[4x^3+25y^3+3(2x)(5y) (2x+5y)

• 4x^3-25y^3-30xy(2x-5y) -[4x^3+25y^3+30xy (2x+5y)

• 4x^3 -25y^3 -60x^2y+150xy^2 -4x^3-25y^3-60x^2y -150xy^2

• -50y^3-120x^2y

• -10y(5y^2+12x^2)