Question

Plz plz help me plz plz help plz plz explain

Answer 1

Answer:

a) (102)² = (100+2)²

using identity (a+b)²= a²+b²+2ab

= 100²+2²+2×100×2

= 10000 + 4 + 400

= 1404

b) (98)² = (100-2)²

using identity (a-b)²= a²+b²-2ab

= 100²+2²-2×100×2

= 10000+4-400

= 604

c) (89)²-(11)²= (89+11) (89-11)

using identity (a)²-(b)²= (a+b)(a-b)

= 100×78

= 7800

Answer 2

thanks for asking

have a nice day and a nice tomorrow