Question Simplify the expression x3−20x2 Evaluate x3−5x2×4Solution x3−20x2 Show Solution Factor the expression x2(x−20) Evaluate x3−5x2×4Multiply the terms x3−20x2Rewrite the expression x2×x−x2×20Solution x2(x−20) Show Solution Find the roots x1=0,x2=20 Evaluate x3−5x2×4To find the roots of the expression,set the expression equal to 0 x3−5x2×4=0Multiply the terms x3−20x2=0Factor the expression x2(x−20)=0Separate the equation into 2 possible cases x2=0x−20=0The only way a power can be 0 is when the base equals 0 x=0x−20=0Solve the equation More Steps Evaluate x−20=0Move the constant to the right-hand side and change its sign x=0+20Removing 0 doesn't change the value,so remove it from the expression x=20 x=0x=20Solution x1=0,x2=20 Show Solution