Question

solve the following equation when x = 4 and y = 2. 5x² + 7y + 5 =

Explanation:

Step1: Substitute x = 4 into \(5x^2\)

First, calculate \(x^2\) when \(x = 4\), so \(4^2=16\). Then multiply by 5: \(5\times16 = 80\).

Step2: Substitute y = 2 into \(7y\)

Calculate \(7\times2=14\).

Step3: Sum all terms

Now add the results from Step1, Step2, and the constant 5: \(80 + 14+5\). First, \(80 + 14 = 94\), then \(94+5 = 99\).

Answer:

99