(a)[2]
Expand and simplify $(3+\sqrt{2})(1+4\sqrt{2})$.
(b)[2]
Rationalise the denominator: $\frac{1}{1+\sqrt{7}}$.
Mathematics 4024 · O Level · Algebraic manipulation
Mathematics 4024 · O Level · Algebraic manipulation
Expand and simplify $(3+\sqrt{2})(1+4\sqrt{2})$.
Rationalise the denominator: $\frac{1}{1+\sqrt{7}}$.