2. justify each step of the proof.
conjecture: if 2(x2 + 5) = 60, then x is 5 or –5.
1....
Mathematics, 23.08.2019 05:30 tommyewall34
2. justify each step of the proof.
conjecture: if 2(x2 + 5) = 60, then x is 5 or –5.
1. 2(x2 + 5) = 60 1.
2. 2x2 + 10 = 60 2.
3. 2x2 = 50 3.
4. x2 = 25 4.
5. x = ±5 5.
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