1. ## help once more

simplify: 3a to the 3rd power times b to the 2nd power + 5a to the second power times b to the second power minus 14ab to the second power minus 3a to the third power times b to the second power

2. Originally Posted by RashanHoliday
simplify: 3a to the 3rd power times b to the 2nd power + 5a to the second power times b to the second power minus 14ab to the second power minus 3a to the third power times b to the second power
Are you sure this is right? The first and last terms are identical.

$(3a)^3b^2 + (5a)^2b^2 - (14ab)^2 - (3a)^3b^2$ <-- Cancelling the first and last terms.

$(5ab)^2 - (14ab)^2$

$25a^2b^2 - 196a^2b^2$

$(25 - 196)a^2b^2$

$-171a^2b^2$

-Dan