What is the answer to r+r*=2|r| ?

The answer to r+r*=2|r| is r>= 0

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r+r*=2|r|

r + r \cdot = 2 ∣ r ∣

r \geq 0

Solution steps

r + r = 2 ∣ r ∣

Find positive and negative intervals

r < 0, r \geq 0

Solve the inequality for each interval

No Solution or r \geq 0

Merge Overlapping Intervals

r \geq 0

y, x^{2} + ∣ x ∣ y + y^{2} = 1

x^{2} - 1 = 2 x - 4

∣ x - 1 ∣ - ∣ x - 2 ∣ = \frac{1}{2}

∣ z ∣^{2} z^{2} = 1

x^{2} + 4 x + 3 + 2 x + 5 = 0