Mariah started to find the solutions of
x2 + 4x + 1 = 0. Her work is shown below.
...
Mathematics, 10.04.2020 00:26 tommyewall34
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.
Answers: 2
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