Answer:
z+9(8−x)+8(z+8)=
z+72-9x+8z+64=
9z-9x+136
(3−10)^2−(5−12)^2 parenthesis first
(-7)²-(-7)²=
49-(49)=49-49=0
2^2⋅4^3 exponent first
2*2*4*4*4
4*64=256
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