Find the value of R*S

The solution demonstrates how to find the value of RS by expanding the second equation, substituting the first equation, and simplifying the resulting equation.

Answer

Let’s break down this problem step-by-step.

1. Analyze the Given Equations

We have two equations:

2. Expand the Second Equation

Expanding

gives us:

3. Isolate the Desired Term

Notice that the expanded equation contains the term we’re looking for:

. Let’s rearrange the equation to isolate it:

4. Substitute from the First Equation

We know from the first equation that

. Substitute this into our rearranged equation:

5. Simplify to Find RS

Simplify the equation and solve for RS:

Therefore,

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