8x*5x=-21

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Solution for 8x*5x=-21 equation: 



8x*5x=-21

We move all terms to the left:

8x*5x-(-21)=0

We add all the numbers together, and all the variables

8x*5x+21=0

Wy multiply elements

40x^2+21=0

a = 40; b = 0; c = +21;
Δ = b2-4ac
Δ = 02-4·40·21
Δ = -3360
Delta is less than zero, so there is no solution for the equation

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