Perform Operations with Polynomials in Several Variables
-$$\left( 9 x ^ { 4 } + 7 x y - y ^ { 3 } \right) - \left( x ^ { 4 } + 5 x y + 7 y ^ { 3 } \right)$$
A) $8 x ^ { 4 } + 2 x y - 8 y ^ { 3 }$
B) $10 x ^ { 4 } + 13 x y + 6 y ^ { 3 }$
C) $9 x ^ { 4 } + 2 x y - 8 y ^ { 3 }$
D) $8 x ^ { 4 } + 2 x y - 6 y ^ { 3 }$

Question

Quizplus · Accepted Answer

Subtracting the second polynomial from the first, we get $8x^4 + 2xy - 8y^3$.

Perform Operations with Polynomials in Several Variables - (9x4+7xy−y3)−(x4+5xy+7y3)\left( 9 x ^ { 4 } + 7 x y - y ^ { 3 } \right) - \left( x ^ { 4 } + 5 x y + 7 y ^ { 3 } \right)(9x4+7xy−y3)−(x4+5xy+7y3)

Perform Operations with Polynomials in Several Variables
- $\left( 9 x ^ { 4 } + 7 x y - y ^ { 3 } \right) - \left( x ^ { 4 } + 5 x y + 7 y ^ { 3 } \right)$