Help. Pictures are attached,
answer to 4 is 4 inexplanation: 1/2 3b(squared) = 243b(squared)=48b(squared)=16b=4 (negative excluded as it's a length)Answer to 5 is 22explanation:x(squared) + z = 103x(s..) = 103-z9 or -9 (s....) = 103-z81= 103-zz= 22
