Respuesta :

brixzy

Answer: =

x

2

4

x

21

Step-by-step explanation: (

x

+

3

)

.

(

x

7

)

=

(

x

)

.

(

x

7

)

+

(

3

)

.

(

x

7

)

ANSWER

x^2-4x-21

EXPLAIN

First expand the brackets by multiplying the number from the first bracket to the second bracket

you will get this = x^2 + 3x- 7x- 21 ,then u collect the like terms which is (3x & -7x).

your answer ( x^2 - 4x - 21 ).

Q&A Education