Step-by-step explanation:
= 5 • ( 4• x )
= 5 ( 4x )
= 20x

Answer:b
Step-by-step explanation:
#7 is the easiest one.
a + bi = -9 + 4i
see the expression on either side matches up so..
a = -9 and b = 4
Answer:
Because they are different and have different MCQ scqare UNIT.
Step-by-step explanation:
Make me brainliest please :)