243=-9x(10+x)

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Solution for 243=-9x(10+x) equation: 



243=-9x(10+x)

We move all terms to the left:

243-(-9x(10+x))=0

We add all the numbers together, and all the variables

-(-9x(x+10))+243=0



We calculate terms in parentheses: -(-9x(x+10)), so:

-9x(x+10)

We multiply parentheses

-9x^2-90x

Back to the equation:

-(-9x^2-90x)



We get rid of parentheses

9x^2+90x+243=0

a = 9; b = 90; c = +243;
Δ = b2-4ac
Δ = 902-4·9·243
Δ = -648
Delta is less than zero, so there is no solution for the equation

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