Respuesta :
Answer:
ab - 2b - a +2
ab - a - 2b +2
Rearranging like terms
a( b -1) -2 ( b-1)
(b-1) (a-2)
An expression is defined as a set of numbers, variables, and mathematical operations. The factored form of ab – 2b - a + 2 is (b-1)(a-2).
What is an Expression?
In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The factors of ab – 2b - a + 2 by grouping can be done as,
ab – 2b - a + 2
Take b as the common term from the first two terms, and -1 as the common term from the last two terms.
= b(a–2) -1(a - 2)
Taking (a-2) as the common term from the two terms,
= (b-1)(a-2)
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