C-03-Q152mediumsingle_mcqFactorize a3−a2−10a−8a^3 - a^2 - 10a - 8a3−a2−10a−8:a(a+1)(a−4)(a+2)(a+1)(a-4)(a+2)(a+1)(a−4)(a+2)b(a−1)(a+4)(a−2)(a-1)(a+4)(a-2)(a−1)(a+4)(a−2)c(a+1)(a+4)(a−2)(a+1)(a+4)(a-2)(a+1)(a+4)(a−2)d(a−1)(a−4)(a+2)(a-1)(a-4)(a+2)(a−1)(a−4)(a+2)ব্যাখ্যাTesting a=−1a=-1a=−1: −1−1+10−8=0-1 - 1 + 10 - 8 = 0−1−1+10−8=0, so (a+1)(a+1)(a+1) is a factor. The remaining roots are a=4a=4a=4 and a=−2a=-2a=−2, giving (a+1)(a−4)(a+2)(a+1)(a-4)(a+2)(a+1)(a−4)(a+2).