Step 2: She did not simplify under the square root correctly
under the square root:
(-6)^2 =36
and -4(5)(-8) =160
therefore under the square root it needs to be square root of 36+160 which is square root of 196.
That answer is 14 when square rooted
He can make 12 or 9 because 9x4=36 and 12x3=36
D=z, j=4d,
If w=j, then w=4d,
If w=4d and d=z then:
w=4z
I think the answer is 14 6/3