why sqrt(36) is just positive 6

When we want to evaluate the square root of a number, say 36, the answer is just positive 6. It is a common math mistake for students to say the answer is both positive 6 and negative 6. It is both positive and negative 6 when we want to solve the quadratic equation x^=36 --------------------------------------------------------- If you find my channel helpful and would like to support, then you can subscribe by clicking 👉 support me Patreon: 👉 buy a math shirt or a hoodie: 👉 “Just Algebra“ (by blackpenredpen) is dedicated to helping middle school, high school, and community college students who need to learn algebra. Topics include how to solve various equations (linear equations, quadratic equations, square root equations, rational equations, exponential equations, logarithmic equations, and more), factoring techniques, applications of algebra (aka word pro