Question

(3 - (-4)x to the power of 2), when x = 3

Answer 1

3-(-4)*3

3-(-12)

15^2=225

Answer 2

(3-(-4)x)2 (please take the two as to the power)
=>(3+4*3)2 (as 3 is x)

=>(3 +12)2

=>(15)2 = 225
Hence the answer is 15 square which is 225