Question

Solve the quadratic equation by using either a numeric or a graphic approach. x squared minus 16 x minus 64 = 0 a. x = -11.1 or x = -12.4 c. x = 16.3 or x = -2.9 b. x = 19.3 or x = -3.3 d. x = 1.3 or x = -3.4

Answer 1

Answer:

B.

Step-by-step explanation:

$x^2 - 16x - 64 = 0$

$(x-8)^2 = 128$

$x = 8 + \sqrt{128}$

or

$x=8-\sqrt{128}$

so x = 19.3

or x = 3.3