Since the roots are 2,3i, and -3i, you can write it as
(x-2)(x-3i)(x+3i)=(x-2)(x^2+9)=x^3-2x^2+9x-18.
7.4z-5(-1.6z+2.4)
7.4z+8z-12
15.4z-12
Hope this helps :)
Answer:
C
Step-by-step explanation:
because acute angles have to be less than 90 degrees so therefore it's C.
A²+b²=c²
39²+b²=89²
1521+b²=7921
subtract 1521 from both sides
b²=6400
so then you square both sides
√6400
80
Below (or above) is how to calculate distance.
