To solve the equation x - √x + 1 = 5, we can start by isolating the square root term.
x - √x + 1 = 5
Subtracting 1 from both sides:
x - √x = 4
Now, let's square both sides of the equation to eliminate the square root:
(x - √x)^2 = 4^2
Expanding the left side of the equation:
x^2 - 2√x * x + (√x)^2 = 16
x^2 - 2x√x + x = 16
Combining like terms:
x^2 - 2x√x + x - 16 = 0
Rearranging the terms:
x^2 + x - 2x√x - 16 = 0
Let's now isolate the square root term by moving all other terms to the other side:
2x√x = x^2 + x - 16
Now, let's square both sides again to eliminate the square root:
(2x√x)^2 = (x^2 + x - 16)^2
4x^2 * x = (x^2 + x - 16)(x^2 + x - 16)
4x^3 = (x^2 + x - 16)(x^2 + x - 16)
Expanding the right side of the equation:
4x^3 = x^4 + x^3 - 16x^2 + x^3 + x^2 - 16x - 16x^2 - 16x + 256
Simplifying:
4x^3 = x^4 + 2x^3 - 32x^2 - 32x + 256
Now, let's rearrange the terms to form a quadratic equation:
x^4 - 2x^3 - 32x^2 - 32x + 256 - 4x^3 = 0
x^4 - 6x^3 - 32x^2 - 32x + 256 = 0
At this point, it's difficult to solve this equation algebraically. You may want to use numerical methods (such as factoring, long division, or graphing) or a calculator to approximate the possible solutions.
