If one of the zeroes of the quadratic polynomial (a-1) x2 + ax + 1 is -3, then find the value of a.
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Step-by-step explanation:
(a-1) 2x + ax + 1
putting values (x+ -3)
(a-1) 2(-3)+a(-3)+1=0
(a-1) -6-3a+1=0
a-1-6-3a+1=0
2a-6=0
2a=6
a=6/2
a=3
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