Question

Kindly solve this question​

Answer 1

Answer:

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Answer 2

Answer:

1. 99³

(100-1)³

By using identify

(x-y)³= x³-y³-3xy(x-y)

here x= 100, y= -1

100³-1²-3×100×1(100-1)

1000000-1-300(99)

999999-29700

=970299

2. 102³

(100+2)³

By using identify

(x+y)³= x³+y³+3xy(x+y)

Here x= 100, y= 2

(100)³+2³+(3×100×2)(100+2)

1000000+8+600(100+2)

1000000+8+60000+1200

=1061203

3. 998³

(1000-2)³

By using identify

(x-y)³= x³-y³-3xy(x+y)

Here x= 1000 , y= -2

(1000)³-2³-(3×1000×2)(1000-2)

1000000000-8-6000(1000-2)

1000000000-8-6000000+12000

=994011992

Step-by-step explanation:

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