Question

simplify under root 72 + under root 800 minus under root 18

Answer 1

√72 + √800 - √18

=> √{ 2 × 6 × 6 } + √{2 × 20 × 20 } - √{ 2 × 3 × 3 }

=> 6√2 + 20√2 - 3√2

=> 23√2