Question

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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Answer 1

Answer:

3

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