Question

solve 2x2-x-1=0 we whant answher​

Answer 1

Step-by-step explanation:

ehb-pynw-ayo

joi n fast

Answer 2

Step-by-step explanation:

comparing with ax+bx+c=0

by formula -b √b*b-4a*c /2*a

a =2*2=4 a=4 b=-1 c=-1

x=-(4) √(4*4) - 4*4*-1/ 2*4

x=-4+-√16+16/20

x=-4+-4√16/20

x=4