Question

Please help by solving this to me , it will help alot

Answer 1

Step-by-step explanation:

198×198-102×102/96

(198)^2-(102)^2/96

198=200-2

102=100+2

(100+2)^2-(200-2)^2/96

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

((100)^2+(2)^2+2×100×2) - ((200)^2+ (2)^2-2×200×2

/96

10000+4+400-40000-4+800

12000-40000

-28000