Use the identity(a-b)²=a²+2ab+b²Evaluate the followinga)126² b)775

1.	Use the identity(a-b)²=a²+2ab+b²Evaluate the followinga)126² b)775²
Answer» Step-by-step EXPLANATION: a)126^2 can be written as (130-4)^2 we KNOW that (a-b)^2=a^2+b^2-2ab so, 130^2+4^2-21304 16900+16-1040 15876 b)775^2cqn be written as (780-5)^2 using identity 780^2+5^2-27805 600625 hope this will help you plzz mark as brainliest

Use the identity(a-b)²=a²+2ab+b²Evaluate the followinga)126² b)775²

Answer»

Step-by-step EXPLANATION:

a)126^2 can be written as (130-4)^2

we KNOW that (a-b)^2=a^2+b^2-2ab

so,

130^2+4^2-2*130*4

16900+16-1040

15876

b)775^2cqn be written as (780-5)^2

using identity

780^2+5^2-2*780*5

600625

hope this will help you plzz mark as brainliest