Question a5−18a Factor the expression a(a4−18) Evaluate a5−18aRewrite the expression a×a4−a×18Solution a(a4−18) Show Solution Find the roots a1=−418,a2=0,a3=418Alternative Form a1≈−2.059767,a2=0,a3≈2.059767 Evaluate a5−18aTo find the roots of the expression,set the expression equal to 0 a5−18a=0Factor the expression a(a4−18)=0Separate the equation into 2 possible cases a=0a4−18=0Solve the equation More Steps Evaluate a4−18=0Move the constant to the right-hand side and change its sign a4=0+18Removing 0 doesn't change the value,so remove it from the expression a4=18Take the root of both sides of the equation and remember to use both positive and negative roots a=±418Separate the equation into 2 possible cases a=418a=−418 a=0a=418a=−418Solution a1=−418,a2=0,a3=418Alternative Form a1≈−2.059767,a2=0,a3≈2.059767 Show Solution
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