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.
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