Question

Explain how to find the square root of 100. Explain why you use the underlined + sign.

Answer 1

Answer:

10

Step-by-step explanation:

Factor the number: 100 = $10^{2}$

=$\sqrt{10^2}$

Apply radical rule: $\sqrt[n]{a^n} =a$

$\sqrt{10^2} =10$

=10

Answer 2

Answer:

±10

Step-by-step explanation:

so what squared is 100?

10. but also -10.

10*10 = 100, and -10*-10 is also 100.

therefore, sqrt(100) has two solutions, which are positive or negative 10, and that's the application of ±.