8x^2-15=4x^2-40

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Solution for 8x^2-15=4x^2-40 equation: 



8x^2-15=4x^2-40

We move all terms to the left:

8x^2-15-(4x^2-40)=0

We get rid of parentheses

8x^2-4x^2+40-15=0

We add all the numbers together, and all the variables

4x^2+25=0

a = 4; b = 0; c = +25;
Δ = b2-4ac
Δ = 02-4·4·25
Δ = -400
Delta is less than zero, so there is no solution for the equation

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