15=5+23t-16t^2

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Solution for 15=5+23t-16t^2 equation: 



15=5+23t-16t^2

We move all terms to the left:

15-(5+23t-16t^2)=0

We get rid of parentheses

16t^2-23t-5+15=0

We add all the numbers together, and all the variables

16t^2-23t+10=0

a = 16; b = -23; c = +10;
Δ = b2-4ac
Δ = -232-4·16·10
Δ = -111
Delta is less than zero, so there is no solution for the equation

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