Question 641363
My guess is to answer them using "Squaring a Binomial"
It's like this: (a+b)^2 = a^2 + 2ab + b^2

1.(3s+3)squared
= 9s^2 + 12s + 9
2.(5z+1)squared
= 25z^2 + 10z + 1
3.(10y+1)squared
=100y^2 + 20y + 1
4.(1+10y)squared
=1 + 20y + 100y^2