Question

B.
If 102² +98² = 20000 + x, then x
equals to​

Answer 1

Step-by-step explanation:

GIVEN =

102² + 98² = 20000 + x

Then x ,

20000-(102)²+(98)²

BY QUESTION =

By The equation,

(a+b)² + (a-b)²

= (100+2)² + (100-2)²

= (10000 + 4 +400) + (10000+4-400)

= 10404 + 9596

= 20000

AGAIN BY QUESTION =

20000-20000 =x

So,

x = 0

Answer 2

Mohit Godara answer is wrong

$102 {}^{2} + {98}^{2} = 20000 + x$

$= 10404 + 9604 = 20000 + x$

$20008 = 20000 + x$

$x = 20008 - 20000$

$x = 8$