Respuesta :

Answer:

Hence the expression  [tex]$(10a-b)(3a-4)=30a^2-3ab-40a+4b$[/tex]

Step-by-step 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.

[tex]$\begin{matrix}{} & {} & {} & {} & 10a & - & b \\ \times & {} & {} & {} & 3a & - & 4 \\ \end{matrix}$[/tex]

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[tex]$\begin{matrix}{} & {} & {} & - & 40a & + & 4b \\ 30{{a}^2} & - & 3ab & {} & {} & {} & {} \\ \end{matrix}$[/tex]

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[tex]$\begin{matrix}30{{a}^2} & - & 3ab & - & 40a & + & 4b \\ \end{matrix}$[/tex]

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