Question 493586
first calculate what is in parentheses and later what is in the brackets and more later what is out
here are the steps
x =(2a4*4*4*4b)3*3*3*[(-2b)3*3*3]2*2
x =(8a*4*4*4b)3*3*3*[-6b*3*3]2*2
x =(32a*4*4b)3*3*3*[-18b*3]2*2
x =(128a*4b)3*3*3*[-54b]2*2
x = 512ab*3*3*3*-108b*2
x = 1536ab*3*3*-216b
x = 4608ab*-648b
x = -2985984ab^2
ps.: ^2 is squared