164+219=383 is exact for estimate round 164 to 165 or 160 and 219 to 220 so
165+220=385 or 160+220=380
1 hundred can also be 10 tens so when you add 10 tens and 4 tens you 14 tens and that is the same thing as 14 tens
Answer:
x^2-16x+64
Step-by-step explanation:
Simplify= (x-8)(x-8)
Simplified= x^2-8x-8x+64
Combine like terms= x^2-16x+64
Basically whenever the sign is squared on the outside it's the equation times itself. Hope this helps.
