Question

8x^3 + 12y^2 – 13xy - ? = 3x^3 + 9y^2 – 7xy

Answer 1

Answer:

?=5x^3+3y^2-6xy

Step-by-step explanation:

let ?=a

so,8x^3+12y^2-13xy-a=3x^3+9y^2-7xy

or,5x^3+3y^2-6xy-a

0r,a=5x^3+3y^2-6xy