railway RRB Junior Stenographer (Ministerial and Isolated Categories) Mock Test Quantitative Aptitude Algebra Quadratic Equation

यदि समीकरण x2 + ax - b = 0 का एक मूल 1 है, तो (a - b) किसके बराबर है?

1

-1

2

1

3

2

4

-2

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