Question Factor the expression 21x2(1−2x) Evaluate 21x2−x3Rewrite the expression 21x2−21x2×2xSolution 21x2(1−2x) Show Solution Find the roots x1=0,x2=21Alternative Form x1=0,x2=0.5 Evaluate (21)x2−x3To find the roots of the expression,set the expression equal to 0 (21)x2−x3=0Remove the unnecessary parentheses 21x2−x3=0Factor the expression x2(21−x)=0Separate the equation into 2 possible cases x2=021−x=0The only way a power can be 0 is when the base equals 0 x=021−x=0Solve the equation More Steps Evaluate 21−x=0Move the constant to the right-hand side and change its sign −x=0−21Removing 0 doesn't change the value,so remove it from the expression −x=−21Change the signs on both sides of the equation x=21 x=0x=21Solution x1=0,x2=21Alternative Form x1=0,x2=0.5 Show Solution