Help with my homework. Algebra 2??

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The question is fing f+g and f-g
12. f(x)=20x+7;g(x)= -3x
Can u show steps on how u get the answer and expalain? please

2006-10-23 11:49:43 · 4 answers · asked by Anonymous in Education & Reference ➔ Homework Help

f+g=20x+7+(-3x)
=17x+7

f-g=20x+7-(-3x)
=23x+7

2006-10-23 11:52:50 · answer #1 · answered by raj 7 · 0⤊ 0⤋

It's really quite simple
f+g= f(x)+g(x)

(20x+7)+(-3x)
20x+7-3x
17x+7

2006-10-23 11:53:36 · answer #2 · answered by travislizzie 2 · 0⤊ 0⤋

f(X) = 20x + 7
g(x) = -3x

Therefore f(x) + g(x) = 17x + 7, and
f(x) - g(x) = 23x +7

2006-10-23 11:58:20 · answer #3 · answered by ironduke8159 7 · 0⤊ 0⤋

f+g=20x+7+(-3x)
=17x+7

f-g=20x+7-(-3x)
=23x+7

2006-10-23 11:53:38 · answer #4 · answered by twilightobsessed 2 · 0⤊ 0⤋