0.3x^2+0.5x^2-0.4x^2=

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Solution for 0.3x^2+0.5x^2-0.4x^2= equation: 


Simplifying
0.3x2 + 0.5x2 + -0.4x2 = 0

Combine like terms: 0.3x2 + 0.5x2 = 0.8x2
0.8x2 + -0.4x2 = 0

Combine like terms: 0.8x2 + -0.4x2 = 0.4x2
0.4x2 = 0

Solving
0.4x2 = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '0.4'.
x2 = 0

Simplifying
x2 = 0

Take the square root of each side:
x = {0}

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