Question

А) 2а+3б;б) 7/9аб-13/12аб;г) х²-25/х³-6х:х³+5х²/х²-36;пожалуйста срочно надо​

Answer 1

Ответ: Б) -11/36ab

г)  x = 0 (Не уверен но скорее всего да)

Объяснение:

b) 7ab/9-13/12ab = 4*7ab/4*9 - 3*13ab/3*12 = 28ab/36-39ab/36= -11ab/36

Answer 2

Решение математических выражений

A) 2a + 3b: The expression 2a + 3b represents the sum of 2 times the variable a and 3 times the variable b.

B) 7/9ab - 13/12ab: The expression 7/9ab - 13/12ab represents the subtraction of 13/12 times the product of a and b from 7/9 times the product of a and b.

C) (x² - 25) / (x³ - 6x) : (x³ + 5x²) / (x² - 36): This expression involves division and complex fractions. Let's break it down step by step.

First, we simplify the expression (x² - 25) / (x³ - 6x) by factoring the numerator and denominator: (x² - 25) = (x + 5)(x - 5) (x³ - 6x) = x(x² - 6)

So, (x² - 25) / (x³ - 6x) simplifies to (x + 5)(x - 5) / x(x² - 6).

Next, we simplify the expression (x³ + 5x²) / (x² - 36) by factoring the numerator and denominator: (x³ + 5x²) = x²(x + 5) (x² - 36) = (x + 6)(x - 6)

So, (x³ + 5x²) / (x² - 36) simplifies to x²(x + 5) / (x + 6)(x - 6).

Finally, we divide the two simplified expressions: ((x + 5)(x - 5) / x(x² - 6)) / (x²(x + 5) / (x + 6)(x - 6))

This is a complex fraction, and to simplify it, we can multiply the numerator by the reciprocal of the denominator.

Let's proceed with the calculations.

Решение

A) 2a + 3b: 2a + 3b

B) 7/9ab - 13/12ab: 7/9ab - 13/12ab

C) (x² - 25) / (x³ - 6x) : (x³ + 5x²) / (x² - 36): ((x + 5)(x - 5) / x(x² - 6)) / (x²(x + 5) / (x + 6)(x - 6))

Let's proceed with the calculations.