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Alicia is solving a quadratic equation. She wants to find the value of x by taking the square root of both sides of the equation. Which equation allows her to do this?

x2 + 81x + 18 = 54 space  x2-8x+24=17


x2+9x-24=25space x2+16x+64=36

Respuesta :

That's the last one because you can factor to get

(x + 8)^2 = 36

(x + 8) = +/- 6
X=19.5 because you multiply 23+5