Question

simplify and if u can show ur work that would be great thank u​

Answer 1

1) 504i²

(-7×-8×9=504)

(i×i=i²)

2) 12-12i

(9+3=12)

(7i-19i=-12i)

3) 29-31i

(9+20=29)

(-20i-11i=-31i)

4)18-8i

(Using FOIL)

2×9=18

2×-8i=-16i

8i×9=72i

8i×-8i=-64i

-16i+72i-64i=-8i