2(5²+5×-3)+3-5×-3

2(25-15)+3+15

2(10)+18

20+18

38.......

1.hai mate substitute the values in their places...here ab means 5 ×-3 = -15

so it is 25-15 .......as our way +×- = -

5×5=25

here 3-5×-3 = 3____15

2.here the symbol is - × - = +

so it is 3+15

3.add the bracket numbers and multiply with 2 ....

so the answer is

38