Question

АЛГЕБРА, ТЕРМІНОВО, 25 балів!!!!

Answer 1

Ответ:

2) 3m-3=9

3) 25

Объяснение:

2) ...= (m²-1)*(m²+1)*3(m+1) / [(m+1)² * (m²+1)] =

= (m²-1)*3(m+1) / (m+1)² =

= (m-1)*(m+1)*3(m+1) / (m+1)² =

= (m-1) *3 = 3m-3 = [при m=4] =

= 3*4-3=9

3) 4a+ 3/a = 7 → (4a + 3/a)²=7²=49

(4a)² + 2*4a*3/a + (3/a)² = 49

16a² + 24 + 9/a² = 49

16a² + 9/a² = 49-24= 25