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6 December, 20:26

Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.

x^2-21=-4x

a. 7,3

b. - 7,4

c. 7,-3

d. - 7,-3

+2
Answers (1)
  1. 7 December, 00:11
    0
    Answer:D

    Step-by-step explanation:the answer is D
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