Question

x^-3x-28=0 qudratic equation
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Answer 1

Answer:

I HOPE IT WILL HELP YOU!

DEAR! AND PLEASE UNDERSTAND. SORRY!

Step-by-step explanation:

The solutions are:

x

=

−

4

,

x

=

7

Explanation:

x

2

−

3

x

−

28

=

0

We can first factorise this expression by splitting the middle term and then find the solutions:

=

x

2

−

7

x

+

4

x

−

28

=

0

=

x

(

x

−

7

)

+

4

(

x

−

7

)

=

0

=

(

x

+

4

)

(

x

−

7

)

Now, we can equate the two factors with zero and find the solutions:

x

+

4

=

0

,

x

=

−

4

x

−

7

=

0

,

x

=

7