Question

solutions x^2-3x+4=0​

Answer 1

c

=

−

4

.

The quadratic formula gives us solutions:

x

=

−

b

±

√

b

2

−

4

a

c

2

a

=

3

±

√

3

2

−

(

4

×

1

×

−

4

)

2

⋅

1

=

3

±

√

9

+

16

2

=

3

±

√

25

2

=

3

±

√

5

2

2

=

3

±

5

2

That is  

x

=

−

1

or  

x

=

4

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