Question

49 a^2b^4-100 c^4

помогите 

Answer 1

 

$49 a^2b^4-100 c^4 = 49 a^2b^4 - 70ab^2c^2 + 70ab^2c^2 -100 c^4=\ (7ab^2-10c^2)(7ab^2+10c^2)$

 

Answer 2

49а²в⁴-100с⁴=(7ав²)² -(10с²)²=(7ав² - 10с²)(7ав²+10с²)