Question

Calcule o valor de x nas figuras.

Answer 1

d) y2 + y2 = (4√2 ) 2
2y2 = 16*2
2y2 = 32
y2 = 32 / 2
y2 = 16
y = √16
y = 4

( 4√5 ) 2 = (4)2 + ( x + 4 ) 2
16*5 = 16 + x2 +8x + 16
80 = x2 + 8x + 32
x2 + 8x + 32 = 80
x2 + 8x + 32 - 80 = 0
x2 + 8x - 48 = 0
∆ = 64 + 192
∆ = 256

X = -8 + 16 / 2
X = 8 / 2
X = 4

primeira figura