a2 – 3a, a2 – 9, a2 – 4a + 3 এর গ.সা.গু কত?
a (a – 3)
a – 3
Correct
(a – 1) (a – 3)
a (a – 1) (a – 3)
Explanation:
Correct Answer is: a – 3
প্রশ্ন: a2 – 3a, a2 – 9, a2 – 4a + 3 এর গ.সা.গু কত?
সমাধান:
১ম রাশি = a2 – 3a
= a(a – 3)
২য় রাশি = a2 – 9
= a2 – 32
= (a + 3)(a – 3)
৩য় রাশি = a2 – 4a + 3
= a2 – 3a – a + 3
= a(a – 3) -1(a – 3)
= (a – 3)(a – 1)
∴ গ.সা.গু = (a – 3)