Question

125y³-8y³ expand it please friend give me correct answe​

Answer 1

Answer:

use the formula a*3+b*3

Answer 2

$\Large{\underbrace{\sf{\orange{Required\:Solution:}}}}$

$\longrightarrow{\sf{125y^{3}-8y^{3}}}$

• Use this algebraic identity : α³-b³ = (α-b)(α²+αb+b²)

$\longrightarrow{\sf{(5y)^{3}-(2y)^{3}}}$

• Substitute the values in the identity i.e., α = 5y, b=2y.

$\longrightarrow{\sf{(5y-2y)\big[(5y)^{2}+(5y\times2y)+(2y)^{2}\big]}}$

$\large\implies{\boxed{\sf{\orange{(5y-2y)(25y^{2}+10y^{2}+4y^{2}}}}}$

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