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Hi I put in this: x=689/2 x^2 - 2075/2 x+751 But the result is not what i expected: Something like this: 585335001111420

The number is coordinates to a task in geocaching :-)

Guest Jun 10, 2017

#2**0 **

Solve for x:

(689 x^2)/2 - (2075 x)/2 + 751 = 0

Multiply both sides by 2/689:

x^2 - (2075 x)/689 + 1502/689 = 0

Subtract 1502/689 from both sides:

x^2 - (2075 x)/689 = -1502/689

Add 4305625/1898884 to both sides:

x^2 - (2075 x)/689 + 4305625/1898884 = 166113/1898884

Write the left hand side as a square:

(x - 2075/1378)^2 = 166113/1898884

Take the square root of both sides:

x - 2075/1378 = (3 sqrt(18457))/1378 or x - 2075/1378 = -(3 sqrt(18457))/1378

Add 2075/1378 to both sides:

x = 2075/1378 + (3 sqrt(18457))/1378 or x - 2075/1378 = -(3 sqrt(18457))/1378

Add 2075/1378 to both sides:

Answer: | **x = 2075/1378 + (3 sqrt(18457))/1378 or x = 2075/1378 - (3 sqrt(18457))/1378**

** x = +or- 1.8015744745672366**

Guest Jun 10, 2017