Question

6) x – x3 is a ________ polynomial.
7) 1+3x is a _________ polynomial.
8) The value of f(x) = 5x−4x2+3 when x = -1, is:
9) The value of p(t) = 2+t+2t2−t3 when t=0 is
10) The zero of the polynomial f(x) = 2x+7 is

Answer 1

Step-by-step explanation:

6) cubic

7) linear

8) 5×(-1) -4(-1)×2+3 = (-5) +8 +3 = 6

9) 2+ 0 + o -0 = 2

10) 2x+7 =0

2x = -7

x = -7/2

Answer 2

ANswer :

6) x – x³ is a ________ polynomial.

→ Cubic

Reason :- A polynomial of degree three is known as cubic polynomial.

7) 1 + 3x is a _________ polynomial.

→ Linear

Reason :- A polynomial of degree one is known as linear polynomial.

8) The value of f (x) = 5x− 4x² + 3 when x = -1, is:

→ -6

Reason :-  When x= -1

⇒ f (x) = 5x−4x²+3

⇒ f (-1) = 5(-1) -4(-1)² + 3

⇒ -5 -4 + 3

⇒ -6

9) The value of p (t) = 2 + t + 2t² -t³ when t = 0 is

→  2

Reason :-  p (0) = 2 + 0 +2(0)² - (0)³=2

10) The zero of the polynomial f(x) = 2x+7 is

→  -7/2

Reason :-  f (x) = 2x + 7

⇒ 2x + 7 = 0

⇒ 2x = -7

⇒ x = -7/2

∴x = -7/2 is a zero polynomial of the polynomial f (x).

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