Question

Factorise 92 + 2 + 2 − 6 + 2 − 6. Hence find its value when = 1, = 2 and = −1

Answer 1

Step-by-step explanation:

Rationalise the denominator

3

−

2

−1

1

and hence find its value correct to 2 decimal places. ( Given

2

=1.414,

6

=2.449)