question_answer

Subtract the following: \[\mathbf{3}{{\mathbf{x}}^{\mathbf{2}}}\mathbf{+ 13}{{\mathbf{y}}^{\mathbf{2}}}\] from \[\mathbf{3}{{\mathbf{x}}^{\mathbf{2}}}-\mathbf{5}{{\mathbf{y}}^{\mathbf{2}}}\] from \[\mathbf{3}{{\mathbf{x}}^{\mathbf{2}}}-\mathbf{5}{{\mathbf{y}}^{\mathbf{2}}}\]

A) 18y2 

B)  -18y2

C)  \[8{{y}^{2}}+\text{ }6{{x}^{2}}\]

D)  \[7{{x}^{2}}-8{{y}^{2}}\]

E) None of these