Final Answer
Step-by-step Solution
Specify the solving method
We can multiply the polynomials $\left(1-a+b\right)\left(b-a-1\right)$ by using the FOIL method. The acronym F O I L stands for multiplying the terms in each bracket in the following order: First by First ($F\times F$), Outer by Outer ($O\times O$), Inner by Inner ($I\times I$), Last by Last ($L\times L$)
Learn how to solve special products problems step by step online.
$\begin{matrix}(F\times F)\:=\:(-a)(b)\\(O\times O)\:=\:(-a)(-a-1)\\(I\times I)\:=\:(1+b)(b)\\(L\times L)\:=\:(1+b)(-a-1)\end{matrix}$
Learn how to solve special products problems step by step online. Solve the product (1-ab)(b-a+-1). We can multiply the polynomials \left(1-a+b\right)\left(b-a-1\right) by using the FOIL method. The acronym F O I L stands for multiplying the terms in each bracket in the following order: First by First (F\times F), Outer by Outer (O\times O), Inner by Inner (I\times I), Last by Last (L\times L). Then, combine the four terms in a sum. Substitute the values of the products. We can multiply the polynomials -ab-a\left(-a-1\right)+\left(1+b\right)b+\left(1+b\right)\left(-a-1\right) by using the FOIL method. The acronym F O I L stands for multiplying the terms in each bracket in the following order: First by First (F\times F), Outer by Outer (O\times O), Inner by Inner (I\times I), Last by Last (L\times L).