Answer:
Step-by-step explanation:
hello :
2x²+x-1=2 means : 2x²+x-3=0
a=2 b= 1 c= -3
the solutios are : x1 and x2 when the product is : x1×x2 = c/a
let x1 = -3/2 you have : (-3/2)×x2 = -3/2 so x2 = (-3/2)/(-3/2) = 1
The solutions to the equation 2x²+x-1=2 are x=-3/2 or x= 1
