Question

use identity (2x^3-3y) (2x^3+5y)

Answer 1

Hello Mate!

Here, x = 2x^3

a = ( - 3y )

b = 5y

Now, ( x + a )( x + b ) = x^2 + ( a + b )x + ab

( 2x^3 + ( - 3y ) )( 2x^3 + 5y )

= ( 2x^3 )^2 + ( -3y + 5y )2x^3 + ( -3y × 5y )

= 4x^6 + 4x^3y - 15y^2

Hope it helps☺!✌

Answer 2

solution:'

given by :'

$(2 {x}^{3} - 3y)(2 {x}^{3 } +5y) \\ \\ 4 {x}^{6} +10 {x}^{3} y - 6 {x}^{3} y -15 {y}^{2} \\ 4 {x}^{6} -15 {y}^{2} + 4 {x}^{3} y$
i hope helpfull