Question

special products and expansions please help...​

Answer 1

Answer:

hope it helps you mate.

Step-by-step explanation:

m² + 1/m² = 23

(m+1/m)² = m² + 1/m² + 2

(m+1/m)² = 23+2

(m+1/m)² = 25

m+1/m = √25

=> m+1/m = 5

(m-1/m)² = m² + 1/m² - 2

(m-1/m)² = 23-2

(m-1/m)² = 21

m-1/m =√21