Question

Please answer this fast...​

Answer 1

Answer:

a= ±4

Step-by-step explanation:

x=1

y=2

a²x + 2y - 20 = 0

Putting values of x and y in above equation we get,

a²+4-20=0

=>a²=16

=>a= ±4

PLEASE RATE, THANK AND MARK AS BRAINLIEST.