Question Factor the expression 2(x−21) Evaluate 2x−42Solution 2(x−21) Show Solution Find the roots x=21 Evaluate 2x−42To find the roots of the expression,set the expression equal to 0 2x−42=0Move the constant to the right-hand side and change its sign 2x=0+42Removing 0 doesn't change the value,so remove it from the expression 2x=42Divide both sides 22x=242Divide the numbers x=242Solution More Steps Evaluate 242Reduce the numbers 121Calculate 21 x=21 Show Solution
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