Question

5ab2/b2-4a2 b-2a/ab при b=3.2 a= -0.6

Answer 1

Ответ:

5b/2a=16/(-12)=-4/3

Пошаговое объяснение:

Answer 2

To evaluate the expression:

(5ab^2)/(b^2 - 4a^2) - ((b - 2a)/ab)

with b = 3.2 and a = -0.6, we substitute these values into the expression:

(5(-0.6)(3.2)^2)/((3.2)^2 - 4(-0.6)^2) - ((3.2 - 2(-0.6))/(-0.6)(3.2))

Simplifying the expression inside the parentheses, we get:

(5(-0.6)(3.2)^2)/((3.2)^2 - 4(-0.6)^2) - ((3.2 + 1.2)/(-0.6)(3.2))

Simplifying further:

(5(-0.6)(3.2)^2)/(3.2^2 - 4(-0.6)^2) - (4.4/(-0.6)(3.2))

We can simplify the denominator of the first fraction:

(5(-0.6)(3.2)^2)/(3.2^2 - 4(-0.6)^2) = (5(-0.6)(3.2)^2)/(3.2^2 + 4(0.6)^2)

Evaluating the numerator and denominator, we get:

(5(-0.6)(3.2)^2)/(3.2^2 + 4(0.6)^2) = -34.56

For the second fraction, we have:

4.4/(-0.6)(3.2) = -2.889

Therefore, the final result is:

-34.56 - (-2.889) = -31.671

So when b = 3.2 and a = -0.6, the expression evaluates to approximately -31.671.