Ineed this answer!

a submarine was 144 feet below sea level. a shark was hovering at a constant depth above the submarine. the submarine’s depth was twice the depth of the shark. which integer expression describes the position of the shark in relation to sea level?

a) –144 + 2

b) –144 ÷ 2

c) 2 (–144)

d) 144 ÷ 2

366

step-by-step explanation:

answer: the answer is ann

should have been evaluated with one odd value and one even value. the expressions have equivalent values when . when , the first expression has a value of 3 and the second

step-by-step explanation:

x^2 + 81

we can factor this using difference of square binomials.

rewrite the equation:

x^2 - (-81)

factor:

(a^2 - b^2) = (√a^2 + √b^2)(√a^2 - √b^2)

(x^2 - (-81) = (x + √-81)(x - √-81)

we can remove the - from under the radical by multiplying it by i.

(x^2 - (-81) = (x + i√81)(x - i√81)

(x^2 - (-81) = (x + 9i)(x - 9i)

we can check our answer by using foil:

x^2 - 9ix + 9ix - 81i^2

x^2 - 81^2

i^2 = -1

x^2 + 81