Question

Express the signs of the roots of the equation x² + x - 2 = 0 without finding the roots.​

Answer 1

Answer:

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Step-by-step explanation:

x²-x-2=0

x²+2x-x-2=0

x(x+2)-1(x+2)=0

(x-1)(x+2)=0

x-1=0,x+2=0

x=1,x=-2

Answer 2

Step-by-step explanation:

$x { }^{2} + x - 2 = 0$

$2x { }^{2} - 2 = 0$

$2x {}^{2} = 0 + 2$

$2x {}^{2} = 2$

$x { }^{2} = 2 \div 2$

$x {}^{2} = 1$

it is simple answer