C-03-Q148mediumsingle_mcqFactorize x3+2x2−5x−6x^3 + 2x^2 - 5x - 6x3+2x2−5x−6:a(x+1)(x+3)(x−2)(x+1)(x+3)(x-2)(x+1)(x+3)(x−2)b(x−1)(x+3)(x−2)(x-1)(x+3)(x-2)(x−1)(x+3)(x−2)c(x+1)(x−3)(x+2)(x+1)(x-3)(x+2)(x+1)(x−3)(x+2)d(x+1)3(x+1)^3(x+1)3ব্যাখ্যাSince x=−1x=-1x=−1 gives −1+2+5−6=0-1 + 2 + 5 - 6 = 0−1+2+5−6=0, (x+1)(x+1)(x+1) is a factor. The remaining roots are x=−3x=-3x=−3 and x=2x=2x=2, giving (x+1)(x+3)(x−2)(x+1)(x+3)(x-2)(x+1)(x+3)(x−2).