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Solve the equation by factoring:

8x+7x^(2)-x^(3)=0
Answer: 
x=

Solve the equation by factoring:\newline8x+7x2x3=0 8 x+7 x^{2}-x^{3}=0 \newlineAnswer: x= x=

Full solution

Q. Solve the equation by factoring:\newline8x+7x2x3=0 8 x+7 x^{2}-x^{3}=0 \newlineAnswer: x= x=
  1. Rewrite in standard form: Rewrite the equation in standard form.\newlineThe standard form of a polynomial is to have the terms in descending order of their exponents. The given equation is already in standard form: x3+7x2+8x=0-x^3 + 7x^2 + 8x = 0.
  2. Factor out common factor: Factor out the greatest common factor.\newlineThe greatest common factor in each term is xx. Factor xx out of the equation: x(x2+7x+8)=0x(-x^2 + 7x + 8) = 0.
  3. Factor the quadratic: Factor the quadratic equation.\newlineNow we need to factor the quadratic equation x2+7x+8-x^2 + 7x + 8. We are looking for two numbers that multiply to 8-8 (aca\cdot c) and add up to 77 (bb). These numbers are 1-1 and 88. So we can write the quadratic as (x+8)(x+1)(-x + 8)(x + 1).
  4. Write factored form: Write the factored form of the original equation.\newlineNow that we have factored the quadratic, we can write the entire factored form of the original equation as x(x+8)(x+1)=0x(-x + 8)(x + 1) = 0.
  5. Set equal and solve: Set each factor equal to zero and solve for xx. We have three factors: xx, x+8-x + 8, and x+1x + 1. Setting each factor equal to zero gives us the equations x=0x = 0, x+8=0-x + 8 = 0, and x+1=0x + 1 = 0.
  6. Solve for x: Solve each equation for x.\newlineSolving x=0x = 0 gives us the root x=0x = 0.\newlineSolving x+8=0-x + 8 = 0 gives us x=8x = 8.\newlineSolving x+1=0x + 1 = 0 gives us x=1x = -1.
  7. Write roots: Write the roots in simplest form.\newlineThe roots of the equation are x=0x = 0, x=8x = 8, and x=1x = -1.

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