Question

x² + 2x -9 = 0
Solution :- compare x² + 2x - 9=0 with ax+bx+c=0
a = 1, b = 2.c=0
b2 - 4 ac = 22 - 4xlx
b2 - 4 ac = 4 -
b2 - 4 ac =​

Answer 1

Answer:

b²-4ac

2²-4×1×0

4-4

0

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