3x(x)+8=47

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Solution for 3x(x)+8=47 equation: 


Simplifying
3x(x) + 8 = 47

Multiply x * x
3x2 + 8 = 47

Reorder the terms:
8 + 3x2 = 47

Solving
8 + 3x2 = 47

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 + 3x2 = 47 + -8

Combine like terms: 8 + -8 = 0
0 + 3x2 = 47 + -8
3x2 = 47 + -8

Combine like terms: 47 + -8 = 39
3x2 = 39

Divide each side by '3'.
x2 = 13

Simplifying
x2 = 13

Take the square root of each side:
x = {-3.605551275, 3.605551275}

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