samanthamstahl samanthamstahl
  • 01-10-2020
  • Mathematics
contestada

what are the solutions to the equation x squared + x -30 =12

Respuesta :

Ffelecity
Ffelecity Ffelecity
  • 05-10-2020

Answer:

x = 6   x = -7

Step-by-step explanation:

Subtract 12 from each side:

x^2 + x - 30 - 12 = 12 - 12

Simplify:

x^2 + x - 42 = 0

Solve with quadratic formula using both +/- after the first -1:

x = [tex]\frac{-1+\sqrt{1^2 -4*1(-42)} }{2*1}[/tex]

Simplify:

x = 6

x = -7

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