-70=10x+4.9x^2

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Solution for -70=10x+4.9x^2 equation: 


Simplifying
-70 = 10x + 4.9x2

Solving
-70 = 10x + 4.9x2

Solving for variable 'x'.

Reorder the terms:
-70 + -10x + -4.9x2 = 10x + -10x + 4.9x2 + -4.9x2

Combine like terms: 10x + -10x = 0
-70 + -10x + -4.9x2 = 0 + 4.9x2 + -4.9x2
-70 + -10x + -4.9x2 = 4.9x2 + -4.9x2

Combine like terms: 4.9x2 + -4.9x2 = 0.0
-70 + -10x + -4.9x2 = 0.0

Begin completing the square.  Divide all terms by
-4.9 the coefficient of the squared term: 

Divide each side by '-4.9'.
14.28571429 + 2.040816327x + x2 = 0

Move the constant term to the right:

Add '-14.28571429' to each side of the equation.
14.28571429 + 2.040816327x + -14.28571429 + x2 = 0 + -14.28571429

Reorder the terms:
14.28571429 + -14.28571429 + 2.040816327x + x2 = 0 + -14.28571429

Combine like terms: 14.28571429 + -14.28571429 = 0.00000000
0.00000000 + 2.040816327x + x2 = 0 + -14.28571429
2.040816327x + x2 = 0 + -14.28571429

Combine like terms: 0 + -14.28571429 = -14.28571429
2.040816327x + x2 = -14.28571429

The x term is 2.040816327x.  Take half its coefficient (1.020408164).
Square it (1.041232821) and add it to both sides.

Add '1.041232821' to each side of the equation.
2.040816327x + 1.041232821 + x2 = -14.28571429 + 1.041232821

Reorder the terms:
1.041232821 + 2.040816327x + x2 = -14.28571429 + 1.041232821

Combine like terms: -14.28571429 + 1.041232821 = -13.244481469
1.041232821 + 2.040816327x + x2 = -13.244481469

Factor a perfect square on the left side:
(x + 1.020408164)(x + 1.020408164) = -13.244481469

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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