Question Factor the expression 321(f−640) Evaluate 321f−20Solution 321(f−640) Show Solution Find the roots f=640 Evaluate 321f−20To find the roots of the expression,set the expression equal to 0 321f−20=0Move the constant to the right-hand side and change its sign 321f=0+20Removing 0 doesn't change the value,so remove it from the expression 321f=20Multiply by the reciprocal 321f×32=20×32Multiply f=20×32Solution f=640 Show Solution
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