Question

$(a - b) 2 = a2 - 2ab + b2$
Find the square of 99 ( using formula only)​

Answer 1

Answer:

100-1 =99

SO

a=99 , b= 1

99²-2×99×1 + 1²

9,801 - 198 + 1

9604

Answer 2

Answer:

ok

Step-by-step explanation:

(100-1)^2=(a-b)^2=a2-2ab+b2

100×100-2×100×1+1×1

10000-200+1

9801