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SIZIF [17.4K]
3 years ago
11

X 2 +6x+___ complete the square

Mathematics
1 answer:
vaieri [72.5K]3 years ago
6 0
9 is the blank.

(a+b)^2 = a^2 + 2ab + b^2

a = x
b = 3

(x+3)^2 = x^2 + 6x + 9
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