Answer:
Explanation:
f(x)=x²+8x+13
f(x) = (x²+8x+16) -16+13
f(x) = (x+4)²- 3......vertex form
.
assuming x2 is x^2:
f(x) = (x+4)^2 - 3
1. move c to f(x) side
2. make sure a=1
3. (b/2)^2
4. add the solution of 3 on both sides
5. factor the right side using the shortcut
6. add c back to the other side
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