26=-7x(x-2)+4

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Solution for 26=-7x(x-2)+4 equation: 



26=-7x(x-2)+4

We move all terms to the left:

26-(-7x(x-2)+4)=0



We calculate terms in parentheses: -(-7x(x-2)+4), so:

-7x(x-2)+4

We multiply parentheses

-7x^2+14x+4

Back to the equation:

-(-7x^2+14x+4)



We get rid of parentheses

7x^2-14x-4+26=0

We add all the numbers together, and all the variables

7x^2-14x+22=0

a = 7; b = -14; c = +22;
Δ = b2-4ac
Δ = -142-4·7·22
Δ = -420
Delta is less than zero, so there is no solution for the equation

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