Question Factor the expression 10(7−30σ) Evaluate 70−300σSolution 10(7−30σ) Show Solution Find the roots σ=307Alternative Form σ=0.23˙ Evaluate 70−300σTo find the roots of the expression,set the expression equal to 0 70−300σ=0Move the constant to the right-hand side and change its sign −300σ=0−70Removing 0 doesn't change the value,so remove it from the expression −300σ=−70Change the signs on both sides of the equation 300σ=70Divide both sides 300300σ=30070Divide the numbers σ=30070Solution σ=307Alternative Form σ=0.23˙ Show Solution
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