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!! :))
KL is 3x
You sure you didn’t mistype it, the question gives you the value for KL
12^2/3 x 12^4/3
=12^2/3+4/3
=12²
=144
