Use the identity and find the square of 195, (a-b) *2=a*2=2ab +b*2
Answers
Answered by
0
Step-by-step explanation:
195 = 200 - 5
So
195² = ( 200 - 5 ) ²
= 200² + 5² - 2(200)(5)
= 40000 + 25 - 2000
= 38025
Answered by
0
Answer:
42,025
Step-by-step explanation:
195^2
= (200-5)*2
= 200sq + 5sq + 2(200)(5)
= 40,000 + 25 + 2,000
= 42,025
Similar questions