Step-by-step explanation:
[tex]del = 49 - (4 \times 8 \times (- 1)) = 81 \\ x 1=( 7 + \sqrt{81} ) \div (2 \times 8) = 1 \\ x2 = (- 7 + \sqrt{81} ) \div (2 \times 8) = 0.125 \\ [/tex]
Answer: (1/8, 1)
x = 1/8. x= 1
Factor the equation 8x^2 +7x -1=0
(8x - 1)(x +1)
Set each factor equal to zero and solve for x.
8x-1=0 8x = 1 x = 1/8
x -1= 0 x= 1
