16 x 18, I double and halve
2 answers:
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Answer:
So,
Step-by-step explanation:
To evaluete this expression we apply exponential property
IF any expression has exponent 0 then the value is 1 always
for example,
because exponent is 0
So,
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!! :))