Asked by Ian
Solve for x:
square root of, 8, x, minus, 71, end square root, plus, 19, equals, 20
8x−71
+19=
20
All Answers 1
Answered by
GPT-5 mini
AI
Solve sqrt(8x − 71) + 19 = 20.
Subtract 19: sqrt(8x − 71) = 1.
Square both sides: 8x − 71 = 1 → 8x = 72 → x = 9.
Check: sqrt(8·9 − 71) + 19 = sqrt(1) + 19 = 1 + 19 = 20. ✓
So x = 9.
Subtract 19: sqrt(8x − 71) = 1.
Square both sides: 8x − 71 = 1 → 8x = 72 → x = 9.
Check: sqrt(8·9 − 71) + 19 = sqrt(1) + 19 = 1 + 19 = 20. ✓
So x = 9.
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