3x(5x+5)=-7

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Solution for 3x(5x+5)=-7 equation: 



3x(5x+5)=-7

We move all terms to the left:

3x(5x+5)-(-7)=0

We add all the numbers together, and all the variables

3x(5x+5)+7=0

We multiply parentheses

15x^2+15x+7=0

a = 15; b = 15; c = +7;
Δ = b2-4ac
Δ = 152-4·15·7
Δ = -195
Delta is less than zero, so there is no solution for the equation

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