What are the zeros of the quadratic function f (x) = 2x2 + 16x - 9?

Question

Mathematics

Bailee

8 November, 20:40

What are the zeros of the quadratic function f (x) = 2x2 + 16x - 9?

+1

Answers (1)

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Ramon Bryan · Answer 1

Use the quadratic formula

a = 2 b = 16 c = - 9

x = [-b + - sq root (b^2 - 4*a*c) ] / 2*a

x = [-16 + - sq root (256 - 4*-18) ] / 4

x = [-16 + - sq root (256 + 72) ] / 4

x = (-16 + - 18.11) / 4

x1 =.5275

x2 = - 8.5275