Question

Find the product of (7a³-2b³) (7a³+2b³)

please answer fast its urgent​

Answer 1

Answer:

$(7 {}{a {}^{3} } - 2b {}^{3} )(7a {}^{3} + 2b {}^{3} )$

as we know that :

$(a - b)(a + b) = {a}^{2} {b}^{2}$

using this formula we get

$(7 {a}^{3} - 2 {b}^{3} )(7 {a}^{3} + 2 {b}^{3} ) = (7 {a}^{3} ) {}^{2} - (2 {b}^{3} ) {}^{2}$

$49 {a}^{5} - 4 {b}^{5}$

this is your answer ....