Question Factor the expression 4x(x2−5) Evaluate 4x3−20xRewrite the expression 4x×x2−4x×5Solution 4x(x2−5) Show Solution Find the roots x1=−5,x2=0,x3=5Alternative Form x1≈−2.236068,x2=0,x3≈2.236068 Evaluate 4x3−20xTo find the roots of the expression,set the expression equal to 0 4x3−20x=0Factor the expression 4x(x2−5)=0Divide both sides x(x2−5)=0Separate the equation into 2 possible cases x=0x2−5=0Solve the equation More Steps Evaluate x2−5=0Move the constant to the right-hand side and change its sign x2=0+5Removing 0 doesn't change the value,so remove it from the expression x2=5Take the root of both sides of the equation and remember to use both positive and negative roots x=±5Separate the equation into 2 possible cases x=5x=−5 x=0x=5x=−5Solution x1=−5,x2=0,x3=5Alternative Form x1≈−2.236068,x2=0,x3≈2.236068 Show Solution
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