Question Factor the expression 21(x−24) Evaluate 21x−12Solution 21(x−24) Show Solution Find the roots x=24 Evaluate 21x−12To find the roots of the expression,set the expression equal to 0 21x−12=0Move the constant to the right-hand side and change its sign 21x=0+12Removing 0 doesn't change the value,so remove it from the expression 21x=12Multiply by the reciprocal 21x×2=12×2Multiply x=12×2Solution x=24 Show Solution
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