Find the value of k for which the quadratic equation 2x^-kx+=0 have equal roots

the answer is a

step-by-step explanation:

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540

what level of math? also i don't need to be paid if i can you.