Solve (√9 - √4)² × 4² - 5: Complete Square Root Operation

Calculate and indicate the answer:

$(\sqrt{9}-\sqrt{4})^2\cdot4^2-5^1$

Previously mentioned in the order of operations that exponents come before multiplication and division which come before addition and subtraction (and parentheses always come before everything),

Let's calculate then first the value of the expression inside the parentheses (by calculating the roots inside the parentheses first) :

$(\sqrt{9}-\sqrt{4})^2\cdot4^2-5^1 =(3-2)^2\cdot4^2-5^1 =1^2\cdot4^2-5^1$where in the second stage we simplified the expression in parentheses,

Next we'll calculate the values of the terms with exponents:

$1^2\cdot4^2-5^1 =1\cdot16-5$then we'll calculate the results of the multiplications

$1\cdot16-5 =16-5$and after that we'll perform the subtraction:

$16-5=11$Therefore the correct answer is answer B.