y=((x1+x3)(x5x7))+((x4x2+x6)+(x5x1)) You may use any temporary registers from $ to to $t9. Clearly specify your choice of registers using comments ( 5 points). Important : Do not simplify the expression. Example Test: If the values of $s1 through $s7 are initialized in the simulator as: Important : Do not simplify the expression. Example Test: If the values of $s1 through $s7 are initialized in the simulator as: the result is stored in $s0 : Note: Use the '+' button under the Registers display to initialize register values for $s1, \$s 2,$s3,$s4, \$s5, $s6 and $s7