morgieporgs morgieporgs 18-09-2017 Mathematics contestada Please show your work with each expression. Simplify.6a - 2b^2 a=9 b=54d^3 + 6e^2 - 8d ÷ 2 d=2 e=35r^2 ÷ 4 + 4s ÷ 3r r=4 s=9