Question

if f(×)=2x^2-5 and g(×)=3×+3 find (f-g)(×)
a.3x-2x^2-2
b.2x^2-3x-2
c.-x^2-7
d.2x^2-3x-8

Answer 1

The answer is:
$2 {x}^{2} - 5 - 3x - 8 = 2 {x}^{2} - 3x - 8$

Answer 2

Answer:

d.  2x^2    -3x  -8

Step-by-step explanation:

if f(×)=2x^2-5 and

g(×)=3×+3

(f-g)(×)=

I like to line them up vertically

2x^2-5

-(3x+3)

-------------------

Distribute the minus sign

2x^2-5

-3x-3

-------------------

Line up the powers

2x^2+ 0x   -5

           -3x-3

-------------------

2x^2    -3x  -8