Let OC is x, so OC=OB=x
Answer: OC=3 points
Add to each side x2 - 8x = 9 to complete the square.
2 answers:
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Answer:
7 + 4
Step-by-step explanation:
note that ×
= a
Given
(2 + )² = (2 +
)(2 +
)
Each term in the second factor is multiplied by each term in the first factor, that is
2(2 + ) +
(2 +
) ← distribute both parenthesis
= 4 + 2 + 2
+ 3 ← collect like terms
= 7 + 4