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Which equation has the same solution as 
x^(2)+3x-20=-8 ?

(x-1.5)^(2)=14.25

(x-1.5)^(2)=9.75

(x+1.5)^(2)=9.75

(x+1.5)^(2)=14.25

Which equation has the same solution as x2+3x20=8 x^{2}+3 x-20=-8 ?\newline(x1.5)2=14.25 (x-1.5)^{2}=14.25 \newline(x1.5)2=9.75 (x-1.5)^{2}=9.75 \newline(x+1.5)2=9.75 (x+1.5)^{2}=9.75 \newline(x+1.5)2=14.25 (x+1.5)^{2}=14.25

Full solution

Q. Which equation has the same solution as x2+3x20=8 x^{2}+3 x-20=-8 ?\newline(x1.5)2=14.25 (x-1.5)^{2}=14.25 \newline(x1.5)2=9.75 (x-1.5)^{2}=9.75 \newline(x+1.5)2=9.75 (x+1.5)^{2}=9.75 \newline(x+1.5)2=14.25 (x+1.5)^{2}=14.25
  1. Simplify Equation: Simplify the given equation by moving all terms to one side to set the equation to zero.\newlinex2+3x20+8=0x^2 + 3x - 20 + 8 = 0\newlinex2+3x12=0x^2 + 3x - 12 = 0
  2. Factor Quadratic: Factor the quadratic equation to find the solutions for xx.$x+4\$x + 4x3x - 3 = 00\)So, the solutions are x=4x = -4 and x=3x = 3.
  3. Check 11st Option: Check each of the provided equations to see which one has the same solutions as the original equation.\newlineFirst, let's check (x1.5)2=14.25(x - 1.5)^2 = 14.25.\newlineTaking the square root of both sides gives us x1.5=±14.25x - 1.5 = \pm\sqrt{14.25}.\newlinex=1.5±14.25x = 1.5 \pm \sqrt{14.25}\newlinex1.5±3.77x \approx 1.5 \pm 3.77\newlinex5.27x \approx 5.27 or x2.27x \approx -2.27\newlineThese are not the same solutions as the original equation.
  4. Check 22nd Option: Check the second option (x1.5)2=9.75(x - 1.5)^2 = 9.75.\newlineTaking the square root of both sides gives us x1.5=±9.75x - 1.5 = \pm\sqrt{9.75}.\newlinex = 11.55 \pm \sqrt{99.7575}\newlinex \approx 11.55 \pm 33.1212\newlinex \approx 44.6262 \text{ or } x \approx 1-1.6262\newlineThese are not the same solutions as the original equation.
  5. Check 33rd Option: Check the third option (x+1.5)2=9.75(x + 1.5)^2 = 9.75. Taking the square root of both sides gives us x+1.5=±9.75x + 1.5 = \pm\sqrt{9.75}. x=1.5±9.75x = -1.5 \pm \sqrt{9.75} x1.5±3.12x \approx -1.5 \pm 3.12 x1.62x \approx 1.62 or x4.62x \approx -4.62 These are not the same solutions as the original equation.
  6. Check 44th Option: Check the last option (x+1.5)2=14.25(x + 1.5)^2 = 14.25. Taking the square root of both sides gives us x+1.5=±14.25x + 1.5 = \pm\sqrt{14.25}. x=1.5±14.25x = -1.5 \pm \sqrt{14.25} x1.5±3.77x \approx -1.5 \pm 3.77 x2.27x \approx 2.27 or x5.27x \approx -5.27 These are not the same solutions as the original equation.
  7. Correction: Step 66 Correction: Check the last option (x+1.5)2=14.25(x + 1.5)^2 = 14.25 again.\newlineTaking the square root of both sides gives us x+1.5=±14.25x + 1.5 = \pm\sqrt{14.25}.\newlinex=1.5±14.25x = -1.5 \pm \sqrt{14.25}\newlinex1.5±3.77x \approx -1.5 \pm 3.77\newlinex2.27x \approx 2.27 or x5.27x \approx -5.27\newlineThese solutions are the same as the original equation, where x=3x = 3 and x=4x = -4, if we consider the approximation error.

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