Question

[(7+3√5) (3-√5)] -[(7-3√5) (3+√5)]​

Answer 1

Answer:

16

Step-by-step explanation:

$=( {7}^{2} - 9 \times 5)(9 - 5)$

$(49 - 45)(4) = 4 \times 4 = 16$

hope the answer helps