Quis1 . 60² - 40²2 . 63² - 54²

Quis1 . 60² – 40²2 . 63² – 54²

${60}^{2} - {40}^{2} = \ = 3.600 - 1.600 \ \ 3600 \ 1600 \ - - - - ( - ) \ {boxed{bold{smallcolor{orange}{2.000}}}}✓$

$\$

${63}^{2} - {54}^{2} = \ = 3.969 - 2.916 \ \ 3969 \ 2916 \ - - - - - ( - ) \ {boxed{bold{smallcolor{green}{1.053}}}}✓$

Jawaban:

1. 60² – 40²

= (60 × 60) – (40 × 40)

= 3.600 – 1.600

= 2.000

2. 63² – 54²

= (63 × 63) – (54 × 54)

= 3.969 – 2.916

= 1.053