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MathematicsMathematics
27 September, 03:01

Mariah started to find the solutions of

x2 + 4x + 1 = 0. Her work is shown below.

x2 + 4x + 1 = 0

x2 + 4x = - 1

x2 + 4x + 4 = - 1 + 4

(x + 2) 2 = 3

Which describes the solutions of the equation?

Since - 2 and 3 are both rational, the sum and difference are rational.

Since - 2 and StartRoot 3 EndRoot are both rational, the sum and difference are rational.

Since - 2 is rational and StartRoot 3 EndRoot is irrational, the sum and difference are irrational.

Since StartRoot 2 EndRoot is rational and StartRoot 3 EndRoot is irrational, the sum and difference are irrational.

+5
Answers (2)
  1. 27 September, 03:06
    0
    Answer: option C.

    Step-by-step explanation: got it for edgeunity
  2. 27 September, 06:32
    0
    Answer: c; Since - 2 is rational and square 3 is irrational, the sum and difference are irrational.

    Step-by-step explanation: Just took the test
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Home » Mathematics » Mariah started to find the solutions of x2 + 4x + 1 = 0. Her work is shown below. x2 + 4x + 1 = 0 x2 + 4x = - 1 x2 + 4x + 4 = - 1 + 4 (x + 2) 2 = 3 Which describes the solutions of the equation?
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