Question

(3a²-b²) (2a²+5b) expansion ​

Answer 1

( 3a² – b²) ( 2a² + 5b²)

= 3a² ( 2a² + 5b²) – b² ( 2a² + 5b²)

= 6a⁴ + 15a²b² – 2a²b² – 5b⁴

= 6a⁴ + 13a²b² – 5b⁴

Answer 2

Answer:

$(3 {a}^{2} - {b}^{2} )(2 {a}^{2} + 5b) \\ 6 {a}^{4} + 15 {a}^{2} b - 2 {a}^{2} {b}^{2} - {b}^{3}$