Question Simplify the expression t2−4t+4 Evaluate (t−2)2Use (a−b)2=a2−2ab+b2 to expand the expression t2−2t×2+22Solution t2−4t+4 Show Solution Find the roots t=2 Evaluate (t−2)2To find the roots of the expression,set the expression equal to 0 (t−2)2=0The only way a power can be 0 is when the base equals 0 t−2=0Move the constant to the right-hand side and change its sign t=0+2Solution t=2 Show Solution
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