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(2w-3)w=152
We move all terms to the left:
(2w-3)w-(152)=0
We multiply parentheses
2w^2-3w-152=0
a = 2; b = -3; c = -152;
Δ = b2-4ac
Δ = -32-4·2·(-152)
Δ = 1225
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$w_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$w_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{1225}=35$$w_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-3)-35}{2*2}=\frac{-32}{4} =-8 $$w_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-3)+35}{2*2}=\frac{38}{4} =9+1/2 $
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