Question

25a²-9ab/ab, если a/b=-0,24​

Answer 1

Решение.

Применяем почленное деление числителя на знаменатель .

$\bf \dfrac{a}{b}=-0,24\ \ ,\\\\\\\dfrac{25a^2-9ab}{ab}=\dfrac{25\, a^2}{ab}-\dfrac{9ab}{ab}=25\cdot \dfrac{a}{b}-9=25\cdot (-0,24)-9=-6-9=-15$

Answer 2

To evaluate the expression 25a² - 9ab / ab, we can substitute the value of a/b with -0.24.

Let's calculate it step by step:

1. Substitute a/b with -0.24: 25a² - 9ab / ab = 25a² - 9(-0.24)a

2. Simplify the expression: 25a² + 2.16a

Since we don't have a specific value for 'a', we can't calculate the numerical result. However, we can simplify the expression by factoring out the common term 'a':

a(25a + 2.16)

So, the simplified expression is a(25a + 2.16).