Answer:
40[tex]x^{2}[/tex] - 147x - 216
Step-by-step explanation:
(5x - 24) (8x + 9)
First start with multiplying 5x to 8x and 9
40[tex]x^{2}[/tex] +45x
then multiply -24 by 8x and 9
-192 x -216
40[tex]x^{2}[/tex] +45x
-192 x -216
+
________________
40[tex]x^{2}[/tex] - 147x - 216
