Question

Y^2-4xy/3x * 30x/4x+4 при х=9;y=2

Answer 1

Ответ:

-12

Объяснение:

y^2-4xy/3x * 30x/4x+4 при х=9;y=2

2² - 4*9*2/3*9 * 30*9/4*9 + 4 = 4 - 8/3 * 15/2 + 4 = 4 - 20 + 4 = -12

Answer 2

To evaluate the expression when x = 9 and y = 2, we substitute the given values into the expression:

(9^2 - 4 * 9 * 2) / (3 * 9) * (30 * 9) / (4 * 9 + 4)

First, let's simplify the expression step by step:

(81 - 72) / 27 * 270 / 40

Next, perform the arithmetic operations within parentheses:

9 / 27 * 270 / 40

Now, simplify the division and multiplication from left to right:

0.3333 * 270 / 40

89.9998 / 40

Finally, divide:

2.249995

Therefore, when x = 9 and y = 2, the expression Y^2 - 4xy / 3x * 30x / 4x + 4 equals approximately 2.249995.