MCQ
Tick $(\checkmark)$ the correct answer: $a^2+b c+a b+a c=?$
- ✓$(a+b)(a+c)$
- B$(a+b)(b+c)$
- C$(b+c)(c+a)$
- D$a(a+b+c)$
✓
Answer
Correct option: A.
$(a+b)(a+c)$
$a^2+b c+a b+a c$
$=a^2+a b+a c+b c$
$=a(a+b)+c(a+b)$
$=(a+b)(a+c)$
$=a^2+a b+a c+b c$
$=a(a+b)+c(a+b)$
$=(a+b)(a+c)$
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