function
posted by merx .
if y1=x^(2)+3x1 and y2= x5
find:
a. y1+y2
b. y1y2
c. y1*y2

a. Y1 + Y2 =( X^2 + 3X  1) + (X  5),
X^2 + 3X  1 + X  5,
X^2 +4X  6.
b. Y1  Y2 = (X^2 + 3X  1) (X  5),
X^2 + 3X  1 X + 5,
X^2 + 2X + 4,
c. Y1 * Y2 = (X^2 + 2X + 4) (X  5),
X^3 + 3X^2  X  5X^2  15X + 5,
X^3  2X^2  16X + 5