X 2 +6x+___ complete the square
1 answer:
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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Answer:
number of black pencils is 17
2x-3 = -(4x+9)
2x-3 = -4x-9
2x+4x=3-9
6x=-6
x=-1
Answer:
5
Step-by-step explanation:
its 5
