Question

Simplify 4a ^ 2 * (a ^ 3 - b ^ 3) - 3b ^ 3 * (a ^ 2 - b ^ 2) , and evaluate the value for a = 1 and b = - 3 .

DO WITH STEPS AND U WILL BE BRAINLIEST ​

Answer 1

Answer:

Step-by-step explanation:

Given that, a = 1 and b = - 3.

On substituting in the given equation,

4a² ( a³- b³ ) - 3b³ ( a² - b² )

= 4 ( 1 )² [ ( 1 )³ - ( - ( - 3 ))³ ] - 3 ( - 3 )³ [ ( 1 )² - (- ( - 3))² ]

= 4 ( 1 ) [ 1 - ( 3 )³ ] - 3 ( - 3 )³ [ 1 - ( 3 )² ]

= 4 [ 1 - 27 ] - 3 ( - 27 ) [ 1 - 9 ]

= 4 ( - 26 ) + ( 81 ) ( - 8 ) ( ∵ - × - = + )

= - 104 + ( - 648 ) ( ∵+ × - = - )

= - 104 - 648 ( ∵ + × - = - )

= - 752 is the answer.

Answer 2

Answer:

-536is the answer after evaluating it

4a^5-7a^2b^3+3b^5 is after simplification