Question

Write x² + 2x + 9 as (x+a)² + b​

Answer 1

Step-by-step explanation:

Quadratic formula gives the roots of

a

x

2

+

b

x

+

c

=

0

as

x

=

−

b

±

√

b

2

−

4

a

c

2

a

. Note that

b

2

−

4

a

c

is the discriminant

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