Question Find the roots b=421Alternative Form b=5.25 Evaluate 21−4bTo find the roots of the expression,set the expression equal to 0 21−4b=0Move the constant to the right-hand side and change its sign −4b=0−21Removing 0 doesn't change the value,so remove it from the expression −4b=−21Change the signs on both sides of the equation 4b=21Divide both sides 44b=421Solution b=421Alternative Form b=5.25 Show Solution
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