Question

In the following exercises, multiply the binomials. Use any method.
266. (3rs − 7)(3rs − 4)

Answer 1

Hence the expression
`$$(3rs-7)(3rs-4)=9r^2s^2-33rs+28$$`

Explanation:

Explanation

• The given expression is (3rs-7)(3rs-4).
• We have to multiply the given expression.
• Multiply the (3rs-7) by -4, multiply the (3rs-7) by 3rs then add like terms.

`$$\begin{matrix}{} & {} & {} & {} & 3rs & - & 7 \\ * & {} & {} & {} & 3rs & - & 4 \\ \end{matrix}$$`

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`$$\begin{matrix}{} & {} & {} & - & 12rs & + & 28 \\ {} & {} & 9{{r}^2}{{s}^2} & - & 21rs & {} & {} \\ \end{matrix}$$`

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`$$\begin{matrix}{} & {} & 9{{r}^2}{{s}^2} & - & 33rs & + & 28 \\ \end{matrix}$$`