Answer:
1) x= 3i, x= - 3i
2) x= +i
, x = - i
Step-by-step explanation:
1) x^2+9=0
(x+3i)(x-3i)=0
x= 3i, x=-3i
2) x^2-4=-11
x^2=-7
x= ±i
x= +i
, x = - i
hope this helps!! :))
Answer:
-1.2
Step-by-step explanation:
3.8-5=-1.2
lmk if this is right
hope it helped
Answer:
That would be D.
Step-by-step explanation:
first, turn both to polar form. Then you plot the first one and scale by the second. also, using a Rectangular to Polar calculator, we can see that 2.82 is 2 sqrt 2, so it cannot be A or B. It also can't be C since you graph 3-17i first.
If the discriminant(b^2-4ac) is rational, then the quadratic is rational.
~ThePirc
10 yd and 14 inches is the common answer for that