Question

17- Calcule o valor das expressões:

a) (3x + 2) . (3x - 2) . (x + 2)²
b) (5x - 6)² - (5x + 4) . (5x - 4)

Answer 1

a)5x•1x•x+4
5x•4x
20x
eu acho

b)5x-36•8x•1x
-31x•8x
-248x