Factor a2 - 11a + 28. A. (a + 4)(a +7) B. (a - 4)(a - 7) C. (a + 14)(a + 2) D. (a - 14)(a - 2)

asked Mar 4, 2021 5.3k views

5 votes

Factor a2 - 11a + 28.

A. (a + 4)(a +7)
B. (a - 4)(a - 7)
C. (a + 14)(a + 2)
D. (a - 14)(a - 2)

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1 vote

B. (a - 4) (a - 7)
a x a = a^2
a x -7 = -7a
-4 x a = -4a
-4 x -7 =24
a^2 - 11a +24

Jakub Szlaur answered Mar 4, 2021

5.1k points

3 votes

Answer:

B.
(a-4)(a-7)

Explanation:

a*a makes it a^2

-4*-7=28

-4a+-7a=-11a

Arctelix answered Mar 10, 2021

4.7k points

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