Choose the missing exponent to create a polynomial: 3x^4+4x^2-9x^-?+2

A) 2

B) 3

C) - 9

D) 7

E) 4

Question

Brylee

Mathematics

12 May, 22:44

Choose the missing exponent to create a polynomial: 3x^4+4x^2-9x^-?+2

A) 2

B) 3

C) - 9

D) 7

E) 4

+5

Answers (1)

Know the Answer?

Hugh Barton · Answer 1

Any given polynomial must have all positive exponents over the placeholder

we see we are given 9x^-?

so (-) times what=positive?

the answer is negative

so we must pick a negative exponent

so the answer is C - 9

Choose the missing exponent to create a polynomial: 3x^4+4x^2-9x^-?+2A) 2B) 3C) - 9D) 7E) 4

Choose the missing exponent to create a polynomial: 3x^4+4x^2-9x^-?+2

A) 2

B) 3

C) - 9

D) 7

E) 4