Question

Помогите пж умоляю 100.Бпллов​

Answer 1

Пошаговое объяснение:

(а + 1/7)² = а² + 2 * а * 1/7 + (1/7)² = а² + 2/7а + 1/49

(1/9 + в)² = (1/9)² + 2 * 1/9 * в + в² = 1/81 + 2/9в + в²

(n/4 + m/3)² = (n/4)² + 2 * n/4 * m/3 + (m/3)² =

n²/16 + 2mn/12 + m²/9 = n²/16 + mn/6 + m²/9

(k/2 - t/5)² = (k/2)² - 2 * k/2 * t/5 + (t/5)² =

k²/4 - 2kt/10 + t²/25 = k²/4 - kt/5 + t²/25

(4 1/3 - х)² = (13/3 - х)² = (13/3)² - 2 * 13/3 * х + х² =

169/9 - 26/3х + х² = 18 7/9 - 8 2/3х + х²

(у + 3 1/4)² = (у + 13/4)² = у² + 2 * у * 13/4 + (13/4)² =

у² + 26/4у + 169/16 = у² + 6 1/2у + 10 9/16

(z - 5 1/5)² = (z - 26/5)² = z² - 2 * z * 26/5 + (26/5)² =

z² - 52/5z + 676/25 = z² - 10 2/5z + 27 1/25

(4 1/2 + t)² = (9/2 + t)² = (9/2)² + 2 * 9/2 * t + t² =

81/4 + 18/2t + t² = 20 1/4 + 9t + t²