What is factor 2y^2-y-1 ?

The solution to factor 2y^2-y-1 is (2y+1)(y-1)

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factor 2y^2-y-1

factor

2 y^{2} - y - 1

(2 y + 1) (y - 1)

Solution steps

2 y^{2} - y - 1

Break the expression into groups

= (2 y^{2} + y) + (- 2 y - 1)

Factor out

y

from

2 y^{2} + y : y (2 y + 1)

Factor out

- 1

from

- 2 y - 1 : - (2 y + 1)

= y (2 y + 1) - (2 y + 1)

Factor out common term

(2 y + 1) : (2 y + 1) (y - 1)

= (2 y + 1) (y - 1)

x^{2} - 25 = 0

1 < 2^{2 x + 4} < 4

(9 - i) - (8 - i)

16 z^{2} - 54 z + 35

x + 9 = 7