Question

The soloutions to the equation 2x^2 + x - 1 = 2 are x= -3/2 or x=___

Answer 1

9514 1404 393

Answer:

x = 1

Explanation:

Subtracting 2 puts the equation in standard form:

2x^2 +x -3 = 0

The product of the solutions is the ratio of the constant term to the leading coefficient: -3/2.

For solutions -3/2 and 'p', we have ...

-3/2p = -3/2

p = 1

The other solution is x = 1.