Question

Find the squares of each of the following if it
is given :
(a + b)2 = a2 + 2ab + b2 and (a - b)2 = a2 - 2ab + b2
(i) 73
(ii) 99​

Answer 1

(70)2+(3)2 +2*70*3=5329

(100)2+(1)2-2*100*1=9801

Answer 2

Answer:

i.15329 ii.9801

Step-by-step explanation:

(i) (100--27)2

=(100)2-2×100×27+(27)2

=10000-5400+729

=14600+729

=15329

(ii) (100-1)2

=(100)2 - 2×100×1+ (1)2

=10000-200+1

=9800+1

=9801