The square of a binomial expands as follows:
Expanding all the binomials, we have
Sum like terms:
Simplify terms appearing on both sides:
Move all terms involving k to the left and all numbers to the right:
Divide both sides by -20:
A financial advisor puts 1/10 of all income into a savings account and puts the rest into a checking account. Which statement is
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Reflecting a function across the x-axis means to change the sign of the function itself: you're mapping
So, if you have a x/y values table, you simply have to change sign to all the values in the y column.