Question

Find 37 square using identity (a + b)square = a square + 2 a b + b square

Answer 1

Step-by-step explanation:

(30+7)^2

900+420+49

1369

Answer 2

37 = 30+7

30 = a

7 = b

(a+b)sq. = (a)sq.+2ab+(b)sq.

(30+7)sq. = (30)sq.+(2*30*7)+(7)sq.

(37)sq. = 900+(60*7)+49

(37)sq. = 900+420+49

(37)sq. = 1320+49

(37)sq. = 1369

Answer = 1369