Question Simplify the expression p2−14p+49 Evaluate (p−7)2Use (a−b)2=a2−2ab+b2 to expand the expression p2−2p×7+72Solution p2−14p+49 Show Solution Find the roots p=7 Evaluate (p−7)2To find the roots of the expression,set the expression equal to 0 (p−7)2=0The only way a power can be 0 is when the base equals 0 p−7=0Move the constant to the right-hand side and change its sign p=0+7Solution p=7 Show Solution
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