Question

for f(x)=2x+1 and g(x)=x^2-7 find (f-g)(x)
Answer's
x^2 - 7/2x + 1, x = - 1/2 (the = has a line through it)
x^2 -7/2x +1
2x +1/x^2 -7
2x+1/x^2-7, x = + square root 7 (the = also has a line through it and the + has a line under it.
Someone can you please help! it would be a great help.

Answer 1

for f(x)=2x+1 and g(x)=x^2-7 find (f-g)(x)
(f-g)(x) means f(x) - g(x)
2x + 1 - (x^2 -7)
-x^2 +2x +1 + 7


from the choices I think you meant f/g can you verify?

Answer 2

yes f/g the f-g was on accident.

Answer 3

Im confused on how to figure it out though. This stuff just confuses me.

Answer 4

the 2x +1 - (x^2 -7)
Would you add the 2x +1 to make it 3x - (x^2 -7)? @triciaal

Answer 5

sorry having computer issues

no f/g means f divided by g
think about 12/3 but instead of numbers you have an expression

Answer 6

another example 35/5 = 7

Answer 7

No problem, so divide 2x+1? Like that?

Answer 8

I'm just lost on this stuff.

Answer 9

wait ok do you mean like...
2x+1/ x^2 -7?

Answer 10

f(x) = 2x + 1 and g(x) =
yes option c

Answer 11

hint you cannot find a value for x unless you have an equation

Answer 12

Ok so would all the f/g (x) stuff be like that then? Or does it all vary?

Answer 13

whatever it says keep the order and do the required operation

Answer 14

ok Thank you!!

Answer 15

you are very welcome