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Consider the steps for solving 3x^2 - 42x 9 = -5 step 1: 3x^2 - 42x = -14 step 2: 3(x^2-14x) = -14 step 3: 3(x^2- 14x 49) = -14 ___what number should be added to the right side of the equation?

Jennifer Patterson

in Mathematics

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Kaitlin Dean on August 29, 2018

In simplfying equations, it is important to follow PEMDAS rules. Do it the following way:3x^2 - 42x 9 = -5 step 1: 3x^2 - 42x = -14 step 2: 3(x^2-14x) = -14 step 3: 3(x^2 - 14x + 49) = -14 + 49(3) = -14 + 147Therefore, the number that is added to the equation is 147.I hope this helps. Have a good day.


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