Question Factor the expression x2(5x−21) Evaluate 5x3−21x2Rewrite the expression x2×5x−x2×21Solution x2(5x−21) Show Solution Find the roots x1=0,x2=521Alternative Form x1=0,x2=4.2 Evaluate 5x3−21x2To find the roots of the expression,set the expression equal to 0 5x3−21x2=0Factor the expression x2(5x−21)=0Separate the equation into 2 possible cases x2=05x−21=0The only way a power can be 0 is when the base equals 0 x=05x−21=0Solve the equation More Steps Evaluate 5x−21=0Move the constant to the right-hand side and change its sign 5x=0+21Removing 0 doesn't change the value,so remove it from the expression 5x=21Divide both sides 55x=521Divide the numbers x=521 x=0x=521Solution x1=0,x2=521Alternative Form x1=0,x2=4.2 Show Solution
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