Question 28−70σ Factor the expression 14(2−5σ) Evaluate 28−70σSolution 14(2−5σ) Show Solution Find the roots σ=52Alternative Form σ=0.4 Evaluate 28−70σTo find the roots of the expression,set the expression equal to 0 28−70σ=0Move the constant to the right-hand side and change its sign −70σ=0−28Removing 0 doesn't change the value,so remove it from the expression −70σ=−28Change the signs on both sides of the equation 70σ=28Divide both sides 7070σ=7028Divide the numbers σ=7028Solution σ=52Alternative Form σ=0.4 Show Solution
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