a x^2/2 is a polynomial because the power of x is 2 which is a positive whole number but 2/x^2 is not a polynomial because the power of x is -2 which is negative whole number.

b.in

$\sqrt{2 x}$

the power if x will be

$x {}^{ \frac{1}{2} }$

which is not a whole number so it is not a polynomial.

but in

$\sqrt{2} x$

the power if x is a positive whole number.so it is a polynomial.

c.the greatest power of variable of the term is called degree of polynomial

4 0

2 years ago

39. You need to rent a car for a trip. Wrecko'mend charges $. 10 a mile plus a $30 flat fee. Rent a Wreck

Wewaii [24]

i think this is a systems of equations

putting this on a graph we have to equations:

y = 10x + 30

y = 20x

graph and find the intersection.

it has to be more than or equal to 3 miles i think for wreckomend

5 0

2 years ago

F(x) =x^2+6x and g(x)=7-x find (f-g)(x) and (f-g)(9)

liq [111]

(f-g)(x) = x²+6x - (7-x)
(f-g)(x) = x² + 6x - 7 + x
(f-g)(x) = x² + 7x - 7

(f-g)(9) = 9² + 7*9 - 7
(f-g)(9) = 81 + 63 - 7
(f-g)(9) = 137

8 0

2 years ago