Question

Can anyone do this plzzz ???​

Answer 1

Answer:

Step-by-step explanation:

1)

ans

97=100-3

100+3=103

(100+3)(100-3)=                                 (a+b)(a-b)=a^2-b^2

100^2-3*3

10000-9=9991

2)

ans

105*105=105^2

105=100+5

105^2=(100+5)^2

a+b)^2=a^2+2ab+b^2

100*100+2*100*5+5*5

10000+1000+25=11025

3

ans

185*185-115*115