Question

MULTIPLY (1) 7√11 by 2√11. (2) 3√7 by 2√7. (3). 3√28 by 2√7. SIMPLIFY (1) (5+√3) (5-√3). (2) (√5+√2) (√2+√3). (3) (4-√5)² (4). (√3+√5)²​

Answer 1

1) 5.31662479

2) 42

3) 84

Answer 2

above the pic is explanation