# 2x2+-21=0

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## Solution for 2x2+-21=0 equation:

2x^2+-21=0
We add all the numbers together, and all the variables
2x^2=0
a = 2; b = 0; c = 0;Δ = b2-4acΔ = 02-4·2·0Δ = 0Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{0}{4}=0$

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