If x2 + ax + b = 0 and x2 + bx + a = 0 have exactly 1 common root then what is the value of (a + b)?

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answerhappygod
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If x2 + ax + b = 0 and x2 + bx + a = 0 have exactly 1 common root then what is the value of (a + b)?

Post by answerhappygod »

a) 1
b) 0
c) -1
d) 3
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