a3-7a-6 এর উৎপাদক কত?
a3-7a-6 এর উৎপাদক কত? Correct Answer (a + 1) (a + 2) (a-3)
a3-7a-6=a3+a2-a2-a-6a-6=a2(a+1)-a(a+1)-6(a+1)=(a+1)(a2-a-6)=(a+1)(a2-3a+2a-6)=(a+1){a(a-3)+2(a-3)}=(a+1)(a+2)(a-3)a3-7a-6 এর উৎপাদক কত? Correct Answer (a + 1) (a + 2) (a-3)
a3-7a-6=a3+a2-a2-a-6a-6=a2(a+1)-a(a+1)-6(a+1)=(a+1)(a2-a-6)=(a+1)(a2-3a+2a-6)=(a+1){a(a-3)+2(a-3)}=(a+1)(a+2)(a-3)