Answer: =
x
2
−
4
21
Step-by-step explanation: (
+
3
)
.
(
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 ).
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