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LuckyWell [14K]
3 years ago
15

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

Mathematics
1 answer:
miskamm [114]3 years ago
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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Option A

Step-by-step explanation:

Given that A linear model is given for the data in the table: y=1.25x+2.

Let us write observed values for each x and also the predicted values as per equation.

x            2     3        4      8    10      16    20    24    Total

y((O)      3      4        7     12   16      22   28    30

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DEv    1.5    1.75      0       0     1.5     0      1       2     7 75

where y(0) represents observed y or y in the table given

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Dev represents the absolute difference

Hence answer is option

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