Answer:
im pretty sure its <em>true</em>
Step-by-step explanation:
so sorry if its wrong, hope it helps!
F(x)=(2x²+1)-(x²-7) or f(x)=2x²+1-x²+7
Combine like terms/Distribute the subtraction(negative) sign
f(x)=(x²+8)
<u>Answer</u>
d) 2 – i
<u>Explanation</u>
f(x) = x³ – 2x²
When x = i, we proceed as follows.
Note: i =
i² =(√-1)(√-1) = -1
i³ = (√-1)(√-1)(√-1) = -1(√-1) = -1i = -i
f(x) = x³ – 2x²
f(i) = i³ – 2i²
= -i – 2(-1)
= -i + 2
= 2 – i
