Answer:
Answer is B so yeah
(A)-120
(B)20
(C)-20
(D)123
A. –x3 + 6x2 + 9
B. –x3 + 2x2 – 9
C. 5x3 – 2x2 – 2x – 9
D. 5x3 – 2x2 + 2x + 9
The difference between the polynomials (5x³-4x²)-(6x²-2x-9) is 5x³-2x²+2x+9 and the right option is D. 5x³-2x²+2x+9.
A polynomial is an expression of more than two algebraic terms
To calculate the difference between both polynomials we apply the techniques below.
Given:
Substrat each like term accordingly.
Hence, the difference between the polynomials (5x³-4x²)-(6x²-2x-9) is 5x³-2x²+2x+9 and the right option is D. 5x³-2x²+2x+9.
Learn more about Polynomials here: brainly.com/question/2833285
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7c/12 + 5c/16=15/48 +c