How many different ways can a committee of 4 be chosen from a group with 5 people?

1,150 give brainliest

step-by-step explanation

2r= 2300

r =1150

3/20

step-by-step explanation:

well, there are 20 outcomes, and 3 of them you want. so, 3/20

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

answer is c

step-by-step explanation: