Which equation is related to square root of x plus 10 end root minus 1 is equal to x ?

Add 1 to both sides of √(x + 10) − 1 = x to get √(x + 10) = x + 1. Squaring both sides gives x + 10 = (x + 1)² = x² + 2x + 1, which is choice C, “x + 10 is equal to x² + 2x + 1.”

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