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briee998
16.07.2019 •
Mathematics
Which of the following is equivalent to the polynomial below? x^2 - 10x + 61 a. (x-(5--(5+6i)) b. (x+(5-+(5-6i)) c. (x+(5--(5+6i)) d. (x+(5-+(5+6i))
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Ответ:
Ответ:
3![\sqrt{10}](/tpl/images/0266/1152/60644.png)
Step-by-step explanation:
Calculate the distance d using the distance formula
d = √ (x₂ - x₁ )² + (y₂ - y₁ )²
with (x₁, y₁ ) = (- 1, - 3) and (x₂, y₂ ) = (2, 6)
d =![\sqrt{(2+1)^2+(6+3)^2}](/tpl/images/0266/1152/5a8b9.png)
=![\sqrt{3^2+9^2}](/tpl/images/0266/1152/bcb17.png)
=![\sqrt{9+81}](/tpl/images/0266/1152/8859d.png)
=![\sqrt{90}](/tpl/images/0266/1152/02054.png)
= 3
← exact value
≈ 9.5 ( to 1 dec. place )