Question

Resolva a equação do 2 grau, sendo u=r x2-14x+49=144

Answer 1

x²-14x+49-144
x²-14x - 95
∆=b² - 4.a.c
∆= (-14²)- 4.1.(-95)
∆= 196 + 380
∆= 576

x= -b+-√∆/2.a
x=14+-√576/2.1
x=14+-24/2

x'=14+24/2
x'=26

x"=14-24/2
x"= -5

Answer 2

x²-14x+49 =144
x²-14x-95 = 0
∆ = 14²-4.1.(-95)
∆ = 196 + 380 = 576 = 24²

x = (14±√24²)/2
x' = (14+24)/2 = 38/2= 19
x'' = (14-24)/2 = -10/2= -5

espero ter ajudado, abs