Answer:
Step-by-step explanation: 2^2z
(x-p)(x-q)
x^2 -qx -px + pq
x^2 -(q+p) x +pq
so the constant here is the product of p & q
the answer is A
Add up 3+3=6, number has to be bigger than 9 so the answer is false.
Greatest error is half smallest measuring unit. It's measured to 0.1 cm , half that is 0.05 cm answer D.