Question

In the following exercises, multiply the binomials. Use any method.
254. (10a − b)(3a − 4)

Answer 1

Hence the expression
`$$(10a-b)(3a-4)=30a^2-3ab-40a+4b$$`

Explanation:

Explanation

• The given expression is (10a-b)(3 a-4).
• We have to multiply the given expression.
• Multiply the (10a-b) by -4, multiply the (10 a-b) by 3a then add like terms.

`$$\begin{matrix}{} & {} & {} & {} & 10a & - & b \\ * & {} & {} & {} & 3a & - & 4 \\ \end{matrix}$$`

___________________

`$$\begin{matrix}{} & {} & {} & - & 40a & + & 4b \\ 30{{a}^2} & - & 3ab & {} & {} & {} & {} \\ \end{matrix}$$`

___________________

`$$\begin{matrix}30{{a}^2} & - & 3ab & - & 40a & + & 4b \\ \end{matrix}$$`