Question Factor the expression 2(4x−21) Evaluate 8x−42Solution 2(4x−21) Show Solution Find the roots x=421Alternative Form x=5.25 Evaluate 8x−42To find the roots of the expression,set the expression equal to 0 8x−42=0Move the constant to the right-hand side and change its sign 8x=0+42Removing 0 doesn't change the value,so remove it from the expression 8x=42Divide both sides 88x=842Divide the numbers x=842Solution x=421Alternative Form x=5.25 Show Solution
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