Question (p−5)3 Simplify the expression p3−15p2+75p−125 Evaluate (p−5)3Use (a−b)3=a3−3a2b+3ab2−b3 to expand the expression p3−3p2×5+3p×52−53Solution p3−15p2+75p−125 Show Solution Find the roots p=5 Evaluate (p−5)3To find the roots of the expression,set the expression equal to 0 (p−5)3=0The only way a power can be 0 is when the base equals 0 p−5=0Move the constant to the right-hand side and change its sign p=0+5Solution p=5 Show Solution
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