SOLUTION: Find the solution to the queation 2b^2 +9=0

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Question 417879: Find the solution to the queation
2b^2 +9=0
Answer by MathLover1(20855) About Me  (Show Source):
You can put this solution on YOUR website!
2b%5E2+%2B9=0
2b%5E2=-9
b%5E2=-9%2F2
b%5E2=-4.5
b=+-sqrt%28-4.5%29
b=+-sqrt%28-1%2A4.5%29
b=+-i%2Asqrt%284.5%29%29
b=+-%282.12%29i


b1=%282.12%29i
b1=-%282.12%29i
check:
2b%5E2+%2B9=0
2%282.12i%29%5E2+%2B9=0
2%284.4944%28-1%29%29+%2B9=0
-8.9888+%2B9=0.....round -8.9888=9
-9+%2B9=0