2 years ago

Complete the square to re-write the trinomial below in vertex form: x^2+2x+1

1 answer:

6 0

Ax²+bx+c
when a=1, then take 1/2 of b and square it and add something

x²+2x+1
2/2=1, 1²=1
x²+2x+1-1+1
(x+1)²-1+1
(x+1)²

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