7. Root of X^2 + 2X - 3 is (a)-1 (b)-2 (c) 1 (d) 0
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Step-by-step explanation:
GIVEN EQUATION: x² + 2x -3
By splitting the middle term
x² + (3-1)x -3
x² +3x -x -3
x(x+3)-1(x+3)
(x-1) (x+3)
x-1=0 or x+3=0
x=1 or x=-3
So the answer is c)1
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