Question

USING
SUITABLE IDENTITIES
EVALUATE
al (82)2 ​

Answer 1

Answer:

Expert Verified

Solution : (82)² - (18)² it is of the form a² - b² . As we know that , a² - b² = ( a + b ) ( a - b ). (82)² - (18)² = 6400.

Step-by-step explanation:

@BrainlyWarrior

Answer 2

Answer:

Given (82)2 But we can write 82 as

80+2 And also we know that (a + b)2 =

a2+2ab+b2 By applying the above identity

we get (82)2 = (80+2)2= 802+2(80) (2) +22

(80+2)2=6400+320+4=6724