Answer:
The center is at (3, -4), and the radius is 9.
Step-by-step explanation:
x² + y² − 6x = 56 − 8y
Move x and y terms to one side.
x² − 6x + y² + 8y = 56
Complete the squares.
x² − 6x + 9 + y² + 8y + 16 = 56 + 9 + 16
(x − 3)² + (y + 4)² = 81
The center is at (3, -4), and the radius is 9.
We are to write the expression for:
<span>The product of two and The sum of a number and eight
</span>
This means 2 is to be multiplied with the sum of 8 and the number. The number is n. So sum of 8 and number is 8 + n
Product of 2 and the sum is 2 (8 + n)
Therefore, the correct answer is option D
Area of square= Length times length
So sqrt81 is 9, meaning that 9 is the answer.