Please help me to solve with solutions- thank you

A. Use the three methods of solving nonlinear equations to find the solutions of these systems of nonlinear equations. Nonlinear Equations Elimination method Substitution method ich Graphing 1 . [ x 2 + y 2 = 100 Y = 3 4 X 2 . 5 - x 2 - 3 x + y = 0 2 - 12 x2 - 3xty=0 3. [ y 2 - 3 x 2 = 12 Y = - 3 x 4. 5 x 2 + 3 y 2 = 63 (3 4 - X = 3 5 . 5 - 9 x + 3 y = 12 x 2 +y = 2 6. 5 2 x 2 - xy ty 2=8 x 2 = 42 5 12 y 2 - 18y-54= 0 ( 2 yz - 3 y - 9 : 0 B. Solve the systems of nonlinear equations,, using any method of your choice. 1. 2 x2 + y 2 = 18 2 . 5 2 x 2 + 3 y 2 + 3 x - 12y - 42=0 xy = 4 x +3y = 0