Question

21.
using
sutiable identity evalute the following
i] 989​

Answer 1

Answer:

989=21*39+170

this way it can be evaluated

Mark it as branliest

Answer 2

Step-by-step explanation:

We know,

989=1000-2

${989}^{2} = ( {1000 - 2)}^{2}$

therefore we will use

${(x - y)}^{2} = {x}^{2} - 2xy + {y}^{2}$

10,00,000-4000+4 = 9,96,004

now remember that

${989}^{2} = 9,96,004$

I hope it helps! By the way in the question, it should have been evaluate

${989}^{2}$

and not 989. 8ts wrong. but still, here is ur answer