Question

examine which of the following are solution of equation 2x-y=5. (-1/2,-11/2), (1+√2,-3+2√2)​

Answer 1

answer:

step by step explanation:

2x-y=5

2(-1/2) -(-11/2)=5

-1+11/2=5

(-2+11)/2=5

-9/2=5

-4.5=5

therefore (-1/2,-11/2) is not a solution

try with another given solution,

2x-y=5

2(1+root2) -(-3+2root2)

2+2root2 + 3 - 2root2

5=5

therefore (1+root2,-3+2root2) is the solution