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Find all real solutions to the equation:\newlinex55x4+10x310x2+5x1=0x^{5}-5x^{4}+10x^{3}-10x^{2}+5x-1=0

Full solution

Q. Find all real solutions to the equation:\newlinex55x4+10x310x2+5x1=0x^{5}-5x^{4}+10x^{3}-10x^{2}+5x-1=0
  1. Pattern Recognition: Notice the pattern in the coefficients, it looks like the binomial theorem expansion of (x1)5(x-1)^5. Let's check if (x1)5(x-1)^5 equals the given polynomial. (x1)5=x55x4+10x310x2+5x1(x-1)^5 = x^5 - 5x^4 + 10x^3 - 10x^2 + 5x - 1 Yep, it matches exactly.
  2. Equation Simplification: Since (x1)5(x-1)^5 equals the given polynomial, we can write the equation as:\newline(x1)5=0(x-1)^5 = 0
  3. Finding Real Solutions: To find the real solutions, we need to solve for xx in the equation (x1)5=0(x-1)^5 = 0. Taking the fifth root of both sides gives us x1=0x - 1 = 0.
  4. Final Solution: Now, solve for xx by adding 11 to both sides.\newlinex=1x = 1

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