X=(6i)(-3i)

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Solution for X=(6i)(-3i) equation:



X=(6X)(-3X)
We move all terms to the left:
X-((6X)(-3X))=0
We calculate terms in parentheses: -(6X(-3X)), so:
6X(-3X)
We multiply parentheses
-18X^2
Back to the equation:
-(-18X^2)
We get rid of parentheses
18X^2+X=0
a = 18; b = 1; c = 0;
Δ = b2-4ac
Δ = 12-4·18·0
Δ = 1
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{1}=1$
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(1)-1}{2*18}=\frac{-2}{36} =-1/18 $
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+1}{2*18}=\frac{0}{36} =0 $

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