fatimitashikita
08.11.2019 •
Mathematics
3. answer the questions by drawing on the coordinate plane below.
(a) draw the image of triangle after a rotation of 90° counter clockwise about the origin. label the image of triangle .
(b) draw the image of triangle after a reflection across the y-axis. label the image triangle .
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Ответ:
y + (y^2 - 5)/(y^2 - 1) = y^2 + y + 2/(y+1),
We check the denominators, which are (y^2 - 1) and (y+1), then we take the least common denominator. Since y^2 - 1 = (y+1)(y-1), this means that the LCD is (y^2 - 1) itself, and this is what we should multiply by. Therefore the best answer is B.