Question

2√x + 5 + 5y³ for x = 20 and y = -2

Answer 1

Solution

Step 1

Write the expression:

$2\sqrt{x+5}\text{ + 5y}^3\text{ }$

Step 2

Next, substitute x = 20 and y = -2 into the expression:

$\begin{gathered} 2\sqrt{x+5}\text{ + 5y}^3 \\ \\ 2\sqrt{25}\text{ + 5}\times(-2)^3 \\ \\ 2\times5\text{ + 5}\times(\text{ -8\rparen} \\ \\ 10\text{ - 40} \\ \\ -30 \end{gathered}$

Final answer

-30