Question Factor the expression 7(3−4x) Evaluate 21−28xSolution 7(3−4x) Show Solution Find the roots x=43Alternative Form x=0.75 Evaluate 21−28xTo find the roots of the expression,set the expression equal to 0 21−28x=0Move the constant to the right-hand side and change its sign −28x=0−21Removing 0 doesn't change the value,so remove it from the expression −28x=−21Change the signs on both sides of the equation 28x=21Divide both sides 2828x=2821Divide the numbers x=2821Solution x=43Alternative Form x=0.75 Show Solution
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