Question

(7a - 1)² ? (-x + 1)² ? ME AJUDEEM!!

Answer 1

(7a - 1)²= (7a)²-2.7a.1+1²=49a²-14a+149a² - 14a + 1 = 0
Δ= 14² - 49.4 = 196 - 196 =0
a = 14/98 = 1/7
________________________________________
(-x + 1)²= (-x)²+2(-x).1 +1² = x²-2x+1x² - 2x + 1= 0
Δ= 4 - 4 = 0
x= 2/2 = 1