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8x+7(2-3x)=-6x(2x+5)
We move all terms to the left:
8x+7(2-3x)-(-6x(2x+5))=0
We add all the numbers together, and all the variables
8x+7(-3x+2)-(-6x(2x+5))=0
We multiply parentheses
8x-21x-(-6x(2x+5))+14=0
We calculate terms in parentheses: -(-6x(2x+5)), so:We add all the numbers together, and all the variables
-6x(2x+5)
We multiply parentheses
-12x^2-30x
Back to the equation:
-(-12x^2-30x)
-(-12x^2-30x)-13x+14=0
We get rid of parentheses
12x^2+30x-13x+14=0
We add all the numbers together, and all the variables
12x^2+17x+14=0
a = 12; b = 17; c = +14;
Δ = b2-4ac
Δ = 172-4·12·14
Δ = -383
Delta is less than zero, so there is no solution for the equation
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