Question

25a в квадрате минус 9с в квадрате =?

Answer 1

25a^2 - 9c^2 = 5^2*a^2-3^2*c^2=(5a)^2-(3c)^2= (5a-3c)*(5a+3c)

Answer 2

25²-(9с)²=25*25-9*9с*с=625-81с²=544с²

Answer 3

To solve the expression 25a² - 9c², we need to apply the difference of squares formula, which states that:

a² - b² = (a + b)(a - b)

In this case, a is 5a, and b is 3c. So, the expression can be factored as:

25a² - 9c² = (5a + 3c)(5a - 3c)

Therefore, the result of 25a² - 9c² is (5a + 3c)(5a - 3c).