Question

HELPP MEEEI WILL GIVE BRAINIEST!!! | Select all expressions that could be equivalent to x2 + bx - 36 where bis negative.
(x + 3)(2 – 12)
b
с
(x - 2)(x+18)
(x – 13)(x – 3)
(2 + 4)(2 +9)
(2 – 9)(x+4)
d
e

Answer 1

Answer:

a, b, e

Step-by-step explanation: you have on + and one -

Answer 2

The expressions that could be equivalent to x² + bx - 36 where b is negative is x² - 9x - 36 and x² - 5x - 36

check all that applies:

A. (x + 3)(x – 12)

open parenthesis

= x² - 12x + 3x - 36

= x² - 9x - 36

B. (x - 2)(x+18)

open parenthesis

= x² + 18x - 2x - 36

= x² + 16x - 36

C. (x – 13)(x – 3)

open parenthesis

= x² - 3x - 13x + 39

= x² - 16x + 39

D. (x + 4)(x + 9)

open parenthesis

= x² + 9x + 4x + 36

= x² + 13x + 36

E. (x – 9)(x+4)

open parenthesis

= x² + 4x - 9x - 36

= x² - 5x - 36

Therefore, expressions that could be equivalent to x² + bx - 36 where b is negative is x² - 9x - 36 and x² - 5x - 36

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