Question

Tolong dibantuu..........

Answer 1

Misalkan  a+3 = x
zx + y = 0
x + zy = 0 .....kalikan z
.
zx + y  = 0
zx + z²y = 0
kurangkan
y - z²y = 0
y(1 - z²) = 0
1 - z² =  0--> z² = 1
z= 1  atau z = -1
.
z = 1 --> a + 3 = 1 --> a = -2
z = -1 --> a + 3 = - 1 --> a = - 4
nilai  a^2 +6a +17 = p
a=-2 --> p = 4 -12+17 = 9
a = - 4 -> p = 16 -24 + 17 = 9