Answer:
it is 4 i just did it
Step-by-step explanation:
Four
4
d-30%d
(4 + 5i)(2 - 7i) = 8 - 28i + 10i + 35
= 43 - 18i
4 + 5i(2 - 7i) = 4 + 10i + 35
= 39 + 10i
6x
1.2(4x-1)=8x-2=6x