Question

A+3x/a: ax+3x^2/a^2 при a=-93 , x=-30 найдите значение выражения

Answer 1

Ответ:

Пошаговое объяснение:

решение во вложении

Answer 2

To find the value of the expression when a = -93 and x = -30, substitute these values into the given expression:

Expression = (a + 3x) / a - (ax + 3x^2) / a^2

Let's plug in the values a = -93 and x = -30:

Expression = (-93 + 3*(-30)) / (-93) - ((-93)(-30) + 3(-30)^2) / (-93)^2

Now, perform the calculations step by step:

Expression = (-93 - 90) / (-93) - ((-93) * (-30) + 3 * 900) / (8649)

Expression = (-183) / (-93) - (-2790 + 2700) / (8649)

Expression = 183 / 93 - (-90) / 8649

Now, simplify the fractions:

Expression = 61/31 + 10/8649

To add the fractions, we need a common denominator, which is 31 * 8649:

Expression = (61 * 8649 + 10) / (31 * 8649)

Now, calculate the numerator:

Expression = 528489 + 10 / (31 * 8649)

Expression = 528499 / (31 * 8649)

Finally, calculate the value of the expression:

Expression ≈ 528499 / 268119

Expression ≈ 1.97119779507

So, the value of the expression when a = -93 and x = -30 is approximately 1.971.