Question

(x-4)(x+4) (5n-3m)(3m+5n) (a^2+4b)(4b-a^2) -0,36a^2+b^2= (c-1)^2-9=

Answer 1

Что моогла..............

Answer 2

Let's simplify the given expressions step by step:

1. (x - 4)(x + 4): Using the difference of squares formula, we have (a^2 - b^2) = (a - b)(a + b). Applying this formula to the expression, we get: (x - 4)(x + 4) = x^2 - 4^2 = x^2 - 16.

2. (5n - 3m)(3m + 5n): Using the distributive property, we can expand this expression as follows: (5n - 3m)(3m + 5n) = 5n * 3m + 5n * 5n - 3m * 3m - 3m * 5n = 15nm + 25n^2 - 9m^2 - 15mn = 25n^2 + 15nm - 9m^2 - 15mn = 25n^2 - 15mn + 15nm - 9m^2 = 25n^2 - 15mn + 15mn - 9m^2 = 25n^2 - 9m^2.

3. (a^2 + 4b)(4b - a^2): Using the difference of squares formula, we have (a^2 - b^2) = (a - b)(a + b). Applying this formula to the expression, we get: (a^2 + 4b)(4b - a^2) = (a^2 - 4b^2) Note that the term a^2 - 4b^2 cannot be simplified further unless you have additional information about the variables a and b.

Now let's simplify the equations:

-0.36a^2 + b^2 = (c - 1)^2 - 9: We can start by expanding the right side of the equation: (c - 1)^2 - 9 = c^2 - 2c + 1 - 9 = c^2 - 2c - 8. Therefore, the equation simplifies to: -0.36a^2 + b^2 = c^2 - 2c - 8.

Please note that without specific values or additional information, we cannot solve these equations further.