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wolverine [178]
3 years ago
5

Select the correct answer.

Mathematics
2 answers:
Svetlanka [38]3 years ago
3 0

Answer:

<h3>\boxed{ \boxed{ \bold{ {x}^{2}  + 4x - 21}}}</h3>

Step-by-step explanation:

\sf{(x - 3)(x + 7)}

Use the distributive property to multiply each term of the first binomial by each term of the second binomial.

⇒\sf{x(x  + 7) - 3(x + 7)}

⇒\sf{ {x}^{2}  + 7x - 3x  - 21}

Collect like terms

⇒\sf{ {x}^{2}  + 4x - 21}

Hope I helped!

Best regards!!

LUCKY_DIMON [66]3 years ago
3 0

Answer:

\boxed{\boxed{\boxed{\red{{x}^{2}  + 4x - 21}}}}

Step-by-step explanation:

(x - 3)(x + 7) \\ x(x + 7) - 3(x + 7) \\  {x}^{2}  + 7x - 3x - 21 \\  {x}^{2}  + 4x - 21

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