3 years ago

Select the correct answer.

Mathematics

2 answers:

Vera_Pavlovna [14]3 years ago

7 0

Answer:

should be D.

Step-by-step explanation:

F.O.I.L.

x*x=x^2

x*7=7x

-3*x=-3x

-3*7=21

x^2+7x-3x-21

x^2+4x-21

lutik1710 [3]3 years ago

4 0

Answer:

Step-by-step explanation:

use foil so u multiply x and then x and 7 then -3 and x and 7 finally simplify

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