Question

CALCULE AS EQUAÇÕES
A)-X²+40X+0
B) -2X²+36X+0
C)X-²1000X+0
D)-0,80X²+20X+10000

Answer 1

A)-X²+40X+0
-x²+40x

B) -2X²+36X+0
-2X²+36X

C)X-²1000X+0
X-²1000x

D)-0,80X²+20X+10000
-(8/10)^(x²)+20x+10000
-(4/5)^(x²)+20x+10000
-4^(x²)/5(x²)+20x+10000
-4^(x²)+20.5^(x²).x+10000.5^(x²)/5^(x²)

Observação: "^" elevado.

Bons estudos.

Answer 2

a)
x (-x+40)= 0
x'=
x= 0
x"
-x+40= 0
-x= -40 .(-1)
x= 40

b) 2x ( -x+16) = 0

x'
x = 0/2
x= 0

x"
-x+16= 0
x= 16

c)
x ( x-1000) = 0
x'
x= 0

x"
x-1000= 0
x= 1000

d) 400+32= v432 = 20,7 (aproximadamente)

(-20+-v432)/-0,80

x'
(-20-20,7)/-0,80
-40,7/-0,80= 50,875

x"
(-20+20,7)/-0,80
0,7/-0,80
0,875