Question

1) 29^2-28^2 Правильно ли ?: (29-28)(29+28) 2) 54^2-46^2 (54-46)(54+46)

Answer 1

да правильно это по формуле сокращенного умножения

${a}^{2} - {b}^{2} = \\ (a - b)(a + b)$

Удачиииииии

Answer 2

1) Let's simplify the expression (29^2 - 28^2) using the difference of squares formula:

(29^2 - 28^2) = ((29 + 28)(29 - 28))

So, your first expression is indeed correct: (29^2 - 28^2) = (29 - 28)(29 + 28).

2) Similarly, let's simplify the expression (54^2 - 46^2) using the difference of squares formula:

(54^2 - 46^2) = ((54 + 46)(54 - 46))

So, your second expression is also correct: (54^2 - 46^2) = (54 - 46)(54 + 46).

In both cases, the expressions on the left-hand side can be simplified using the difference of squares formula to the expressions on the right-hand side.