Question

The value of √(56+√(56 +√(56+ √(56+√56+ ................ )) )) is

A 8 Correct Answer Incorrect Answer
B 7 Correct Answer Incorrect Answer
C 6 Correct Answer Incorrect Answer
D √56 Correct Answer Incorrect Answer

Solution

Let x = √(56+√(56 +√(56+ √(56+√56 +.... )) )) x = √(56+x) Squaring both the sides x² = 56 + x x² - x – 56 = 0 x² - 8x + 7x – 56 = 0 x(x-8) + 7(x + 7) x = 8 , -7

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