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1 Unit 1: Pure Mathematics A

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Question 256

The quadratic equation 9x2+bx+16=09x^2 + bx + 16 = 09x2+bx+16=0 has one repeated real root.

Find bbb.

Circle your answer.

A

b=0b = 0b=0

B

b=±12b = \pm 12b=±12

C

b=±24b = \pm 24b=±24

D

b=±576b = \pm 576b=±576

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1 Unit 1: Pure Mathematics A Questions

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