Question 10−4r Factor the expression 2(5−2r) Evaluate 10−4rSolution 2(5−2r) Show Solution Find the roots r=25Alternative Form r=2.5 Evaluate 10−4rTo find the roots of the expression,set the expression equal to 0 10−4r=0Move the constant to the right-hand side and change its sign −4r=0−10Removing 0 doesn't change the value,so remove it from the expression −4r=−10Change the signs on both sides of the equation 4r=10Divide both sides 44r=410Divide the numbers r=410Solution r=25Alternative Form r=2.5 Show Solution
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