Find the conjugate of each of the following:
Factorise the expression: x^{2} - y^{2}
Evaluate the following:
Rationalise the denominator of the given expressions. Express your answer in simplest surd form:
Rationalise the denominator of the given expressions. Express your answer in simplest surd form:
Rationalise the denominator of each fraction and then find the sum. Express your answer in simplest surd form:
What is the lowest term that the numerator and denominator of \dfrac{10 \sqrt{13}}{11 \sqrt{11}} must be multiplied by to rationalise the denominator?
Rationalise the denominator for the given expressions. Express your answer in simplest surd form: