Jawab:385
Penjelasan dengan langkah-langkah:a² - b² = (a - b)×(a + b), maka25² + (17² - 23²) =(25×2×10) + (25×5) + ((17-23)×(17+23)) =500 + 125+ (-6 × 40) =625 + (-240) =625 - 240 =385
(xcvi)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Jawab:
385
Penjelasan dengan langkah-langkah:
a² - b² = (a - b)×(a + b), maka
25² + (17² - 23²) =
(25×2×10) + (25×5) + ((17-23)×(17+23)) =
500 + 125+ (-6 × 40) =
625 + (-240) =
625 - 240 =
385
(xcvi)