Question

find the product using identify ( x-3) (x + 7)​

Answer 1

Answer:

X(X+7)-3(X+7)

x^2+7x-3x-21

x^2+4x-21

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Answer 2

Answer:

( x-3)(x+7)

= x(x+7) -3(x+7)

= x^2 +7x -3x -21

= x^2 + 4x -21