Question

Brp nilai p jk x1² + x2² = 3 pd px² - 3x = 12p + 4?

Answer 1

X1²+X2²= (X1+X2)² - 2X1X2

px²-3x-12p-4=0

x1+x2= -b/a = 3/p

x1x2= c/a = -12p-4/p

(3/p)² - 2(-12p-4/p) = 3

9/p² + (24p + 8 /p) - 3= 0 ( dikali p²)

9 + 24p² + 8p - 3p² = 0
21p² + 8p + 9 = 0

rumus abc
p1,p2 = (-b ± √b² - 4ac) /2a

= (-8± √64-4.21.9) /42
= (-8± √-692) / 42
= (-8±26,3) / 42
p1 = (-8+26,3) / 42 = 0.435
p2 = (-8 - 26,3) / 42 = - 0.816

( maaf kalo salah ya )