Answer:
9
Step-by-step explanation:
To find the positive solution to the equation x^2 + 10 = 91, we'll start by isolating x^2 on one side of the equation. To do this, we'll subtract 10 from both sides:
x^2 + 10 - 10 = 91 - 10
x^2 = 81
Next, we'll take the square root of both sides of the equation to solve for x:
√(x^2) = √(81)
x = ±9
Since we are looking for the positive solution, x = 9.