Use the discriminant to determine the number of real solutions to the quadratic equation. 81d^2=18d+1=0 What is the nu

Question

Use the discriminant to determine the number of real solutions to the quadratic equation.

81d^2=18d+1=0

What is the number of real solutions?

Select the correct answer below:

0

1

2

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Euphemia 3 years 2021-08-24T04:57:57+00:00 1 Answers 12 views 0

Answers ( )

  1. vankhanh
    0
    2021-08-24T04:59:53+00:00
    Reply

    The answer is 1

    Use the discramnt formula

    {b {}^{2} - 4ac }

    Where a is 81, B is 18, and c is 1

    We get

    18 {}^{2} - 4(81)(1)

    We then get 324-324=0

    Which equal 0. Since the discramnt produce 0, the number of solution is one and repeated.

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