Question

so find difference
$8 {}^{2} - 7 { }^{2}$
​

Answer 1

Answer:

15

Step-by-step explanation:

${8}^{2} - {7}^{2}$

As,

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

Then,

$= (8 + 7)(8 - 7)$

= 15 × 1

= 15 (Ans)

Answer 2

Answer:

8²-7²

=(8-7)² {a-b}²=à²-2ab+b²

=8²-2×8×7+7²

=64-112+49

=113-112

=1