Maharashtra BoardEnglish MediumSTD 8MathsFactorization2 Marks
Question
Factorize of the following expressions:
ab - a - b + 1
✓
Answer
ab - a - b + 1 = (ab - b) + (1 - a) = b(a - 1) + (1 - a) = b(a - 1) - (a - 1) [since, (1 - a) = -(a -1)]= (a - 1)(b - 1) [taking out the common factor (a - 1)]
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