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Solve the equations in Parts A and B using inverse operations. Check your solutions. In your final answer, include all of your work. Part A: 5 + x2 = 2x2 + 13 Part B: 5 + x3 = 2x3 + 13 PLEASE I NEED HELP!!!!!!!!!!!

Respuesta :

Answer:          

 x = - 2√2

 x = -2

Step-by-step explanation:

A . 5 + x² = 2 x² +13

     5 + x² - 2 x² - 13 = 0

       - x² -8 = 0

       - x² = 8

          x² = -8

          x = - √8

           x = - 2√2

B . 5 + x³ = 2 x³ + 13

     5 + x³- 2 x³ - 13 = 0

        - x³ -8 = 0

         -x³ = 8

          x³ = -8

       x = - ∛8

          x = -2

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