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:
The graph of y=f(x)y=f(x) is the solid black graph below. Which function represents the dotted graph?
1 answer:
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