To solve that we first need to write it as an equation where x is the number: 85 + x^2 = (x-17)^2 85 + x^2 = x^2 - 34x + 289 Now organize the equation by gathering like terms in the same side lf the equation: You can shift 85 to the other side by subtracting 85 from both sides of the equation:
And shift x^2 to the other side by subtracting x^2 from both sides: x^2 - x^2 =x^2 -x^2 + 34x +204 0 = 34x + 204
Shift 34x to the other side by subtracting 34x from sides -34x = 34x - 34x + 204 -34x = 204
And now isolate x by dividing both sides of the equation by -34 -34/-34x = 204/-34 x = -6 Thats your awnser , the number is -6 I hope you understood my brief explanation...
