If one root of the equation (p + q)² x² - 2 (p + q) x + k =0 is 5/p+q , then k is a) 15 b) 50 c) -50 d) -15
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dw qd
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dw wqdd qdqwddd
dqwdqw
qd
dddqd
dwq dwqdwqdwdwdqqdwqdqwdqwdqwdqwdqwd
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