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1/2(z)+5=11z=
We move all terms to the left:
1/2(z)+5-(11z)=0
Domain of the equation: 2z!=0We add all the numbers together, and all the variables
z!=0/2
z!=0
z∈R
-11z+1/2z+5=0
We multiply all the terms by the denominator
-11z*2z+5*2z+1=0
Wy multiply elements
-22z^2+10z+1=0
a = -22; b = 10; c = +1;
Δ = b2-4ac
Δ = 102-4·(-22)·1
Δ = 188
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$z_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$z_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{188}=\sqrt{4*47}=\sqrt{4}*\sqrt{47}=2\sqrt{47}$$z_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(10)-2\sqrt{47}}{2*-22}=\frac{-10-2\sqrt{47}}{-44} $$z_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(10)+2\sqrt{47}}{2*-22}=\frac{-10+2\sqrt{47}}{-44} $
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