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Linear Equations — Maths STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8MathsLinear Equations1 Mark
MCQ
Mark $(\checkmark)$ against the correct answer: $ab - a - b + 1 = ?$
  • A
    $(1 - a)(1 - b)$
  • B
    $(1 - a)(b - 1)$
  • ✓
    $(a - 1)(b - 1)$
  • D
    $(a - 1)(1 - b)$
✓

Answer

Correct option: C.
$(a - 1)(b - 1)$
$(a - 1)(b - 1)$
$ab - a - b + 1$
$= a(b - 1)-1(b - 1)$
$= (a - 1)(b - 1)$

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