Question

√(5x) + 2y when x = 5 and y = -2

Explanation:

Step1: Substitute x=5, y=-2

$\sqrt{5\times5} + 2\times(-2)$

Step2: Simplify square root term

$\sqrt{25} + 2\times(-2) = 5 + 2\times(-2)$

Step3: Simplify multiplication term

$5 + (-4)$

Step4: Calculate final sum

$5 - 4$

Answer:

$1$