Producer of x^(2) -4x-21

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Arnold Zokas asked Apr 23, 2023

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13 votes

Producer of
x^(2) -4x-21

Mathematics
high-school

Arnold Zokas asked Apr 23, 2023

by Arnold Zokas

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1 Answer

15 votes

Answer:

(x - 7)(x + 3)

Step-by-step explanation:

$\rightarrow \sf x^2 - 4x - 21$

breakdown

$\rightarrow \sf x^2 - 7x +3x- 21$

factor out common terms

$\rightarrow \sf x(x - 7) +3(x- 7)$

collect into groups

$\rightarrow \sf (x+3)(x- 7)$

Nefertari answered Apr 27, 2023

by Nefertari

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