find the zero of the polynomial 2x² - x - 1
Answers
Answered by
2
Answer:
2x²-x-1 = 0
2x²-2x+x-1 = 0
2x(x-1) + 1(x-1) = 0
(x-1) ( 2x+1) = 0
=> x = 1 & x = -1/2 <=
hope it helps you
Answered by
1
2x.x-(2-1)x-1 =0
2x.x-2x+x-1 =0
2x(x-1)+1(x-1) =0
(2x+1) (x-1) =0
2x+1=0, x-1=0
x=-1/2, x=1
2x.x-2x+x-1 =0
2x(x-1)+1(x-1) =0
(2x+1) (x-1) =0
2x+1=0, x-1=0
x=-1/2, x=1
Similar questions