Question

Let f(x) = x + 6 and g(x) = x - 5. What is f(x) • g(x)?

A) x2 + 6x + 30
B) x2 - 6x + 1
C) x2 - x + 30
D) x2 + x - 30

Answer 1

f(x).g(x)=x^2+x-30

Answer 2

f(x) = x^2 + 3x − 10 and g(x) = x − 2

(i) f(x) + g(x)
=x^2+3x-10+x-2
=x^2+4x-12 answer//

(ii) 2g(x) − f(x)
..=2(x-2)-(x^2+3x-10)
=2x-4-x^2-3x+10
=-x^2-x+6 answer//


(iii)g(x)/f(x)
..x-2
=------------
x^2+3x-10

....x-2
=-----------
..(x+5)(x-2)

.....1
=--------- answer//
...x+5

source: http://nz.answers.yahoo.com/question/index?qid=20100324023239AAlAlgo

Answer 3

hehe

Answer 4

yahoo answers!

Answer 5

D is the right answer
I solve it myself!

Answer 6

ty