<span>2x + 5 is your answer </span>
Answer:
A) 30
B) 12 kg
C) 2,125 m
Step-by-step explanation:
1)
3)
let's recall that the conjugate of any pair a + b is simply the same pair with a different sign, namely a - b and the reverse is also true, let's also recall that i² = -1.