Question Factor the expression 21(1−2x) Evaluate 21−xSolution 21(1−2x) Show Solution Find the roots x=21Alternative Form x=0.5 Evaluate 21−xTo find the roots of the expression,set the expression equal to 0 21−x=0Move the constant to the right-hand side and change its sign −x=0−21Removing 0 doesn't change the value,so remove it from the expression −x=−21Solution x=21Alternative Form x=0.5 Show Solution
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