Rajni bought a triangular shaped cardboard with sides 2x2 – y2 + 19, x2 – 3y2 and x2 + 2xy + y2. Find the perimeter of the cardboard, if x = –1 and y = 2.
A8
B6
C12
D7
Rajni bought a triangular shaped cardboard with sides 2x2 – y2 + 19, x2 – 3y2 and x2 + 2xy + y2. Find the perimeter of the cardboard, if x = –1 and y = 2.
A8
B6
C12
D7