21q^2 bc (7x21) x (q x q)
We are simplifying this so they are easier to add in your head.
87+33 is easier math to do in your head
so our new estimated number would be 120
Answer:
a). 7
Step-by-step explanation:
3x-4=17
3x-4+4=17+4
3x=21
3x/3=21/3
x=7
Maybe a square that is 4 on every side
