Тотожні перетворення раціональних дробів

Дробовими є вирази: \(\frac{ас}{а+с}\) та \(\frac{х^2+у^2}{2ху}\), оскільки вони містять дробові числа.

To find the value of the expression, substitute x=3.2 into the expression. The correct choice, 0.2, is obtained by evaluating the expression.

The expression does not have meaning when the variable is equal to 5.

The correct choice is $$\frac{-2d}{7}$$ because it simplifies the given fraction.

To simplify the fraction, factor the numerator and denominator. The common factor of 5 can be canceled out, leaving 1 in the numerator. The simplified fraction is 1/(a+4), which matches the correct choice.

The expression can be simplified to (3b-2)/(3x). This is the correct choice because it combines the fractions and simplifies the numerator and denominator.

The correct choice is $$$$ because it simplifies the given expression correctly.

The correct choice is -8/(x-2) because when we simplify the expression, the terms cancel out and we are left with -8/(x-2).

The expression can be simplified to 2/(x+3y). This is the correct choice because it matches the simplified form of the given expression.

The product of fractions is obtained by multiplying the numerators and denominators separately. The correct choice is \(\frac{х^2}{3}\) because when we multiply \(\frac{2}{х^2}\) and \(\frac{х^4}{6}\), we get \(\frac{2 \cdot х^4}{х^2 \cdot 6} = \frac{х^2}{3}\).