2[x]2-7[x]+8=0

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Solution for 2[x]2-7[x]+8=0 equation:


Simplifying
2[x] * 2 + -7[x] + 8 = 0

Reorder the terms for easier multiplication:
2 * 2x + -7[x] + 8 = 0

Multiply 2 * 2
4x + -7[x] + 8 = 0

Reorder the terms:
8 + 4x + -7x = 0

Combine like terms: 4x + -7x = -3x
8 + -3x = 0

Solving
8 + -3x = 0

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + -3x = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -3x = 0 + -8
-3x = 0 + -8

Combine like terms: 0 + -8 = -8
-3x = -8

Divide each side by '-3'.
x = 2.666666667

Simplifying
x = 2.666666667

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