Question

2 x square + 3 y square upon 2 x square - 3 y square is equal to 125 upon 71 then find the value of 4 x +3 y upon 4 x minus 3 y

Answer 1

Step-by-step explanation:

2xx + 3yy = 125;

2xx - 3yy = 71;

xx=(125 - 3yy)/2;

2(( 125 - 3yy)/2) - 3yy= 71;

-3yy-3yy=71-125;

- 6yy=-54yy;

yy= 9;

y = 3;

2xx-3(9) = 125;

2xx-27=125;

2xx= 125-27;

xx=49;

x=7;

4x+3y=4(3)+3(7) = 12+21=33;

4x-3y=4(3)-3(7) = 12-21= -9;