9000019805 Level: BAssuming x∈R, find the solution set of the following equation. x4+2x2+1=0∅{−1;1}{−2;2}{0}
9000019807 Level: AAssuming x∈R, find the solution set of the following equation. (3x+2)(x2+1)(x2+1)=0{−22;−23}{−23;12}{23;12}{−1;−22;−23}
9000019809 Level: BFind the factorization of the following equation. x3+3x2−x−3=0(x+3)(x+1)(x−1)=0(x−3)(x+1)(x−1)=0(x+3)(x−3)(x−1)=0(x+3)(x−3)(x+1)=0
9000019810 Level: BFind the factorization of the following equation. 5x4−30x2+40=05(x−2)(x+2)(x−2)(x+2)=0(x−2)(x+2)(x−2)(x+2)=05x(x−2)(x+2)(x−2)=05x(x−2)(x+2)(x+2)=0
9000019803 Level: BFind the solution set of the following equation. x4−5x2+4=0{−2;−1;1;2}{−1;1}{−2;2}{1;2}
9000019804 Level: BAssuming x∈R, find the solution set of the following equation. x4−16=0{−2;2}{−2;2}{−4;4}{−2;−2;2;2}
9000019801 Level: AAssuming x∈N, find the solution set of the following equation. x3−6x2+9x=0{3}∅{0;3}{−3;3}
9000019802 Level: AAssuming x∈N, find the solution set of the following equation. 2x3−3x2=0∅{0}{2}{0;32}