9514 1404 393
Answer:
17 -4i
Step-by-step explanation:
You do this the same way you would if i were a variable.
8-(-4+5i)-(-5-i) = 8 +4 -5i +5 +i = (8 +4 +5) +(-5i +i) = 17 -4i
Adding what rational expressions?
(x-p)(x-q)
x^2 -qx -px + pq
x^2 -(q+p) x +pq
so the constant here is the product of p & q
the answer is A
Answer:
O is the center of the circle with radius IE(=ID=EF)
Step-by-step explanation:
Join all 3 points D, E, F, forming the triangle DEF.
Let the midpoint of EF be M and the midpoint of ED be N. (first picture)
Join point I to E, D and F.
Since IN is both an altitude and median to triangle EID, then triangle EID is an isosceles triangle, and IE=ID
similarly, we see that IE=IF.
conclusion: IE=ID=EF.
1.
a.2,3,5 450/2=225 450/3=150 450/5=90
b.none
c.2 only 18,652/2=9,326
d.5 only 455/5=91
2.
a.3 and 5
b.3 and 7
c.19
d.7 and 21
3.
a.30
b.18
c.24
d.30
