Explain why [sqrt(4)]2 = 4. How would you apply that explanation to solving x in sqrt(x+5) = 7?
1. (sqrt4)*2 = 2*2 = 4.
2. sqrt(x+5) = 7.
Square both sides:
x + 5 = 49,
X = 49 - 5 = 44.
2. sqrt(x+5) = 7.
Square both sides:
x + 5 = 49,
X = 49 - 5 = 44.