Question

x=3 3x(4x+15)+5 answer

Answer 1

by putting value of x we get
3×3(4×3+15)+5
9(12+15)+5
9×27+5
243+5
248

Answer 2

Heya !!

x = 3 (given)

3x(4x+15)+5

=> 3(3) [4(3)+15] + 5

=> 9 (12+15) + 5

=> 9 × 27 + 5

=> 243 + 5

=> 248