Question

tolong bantu aku dong kak besok di kumpulin ಥ⁠_⁠ಥ, jawab yang jujur ya kakak, soal di gambar
↓, makasih (⁠つ⁠≧⁠▽⁠≦⁠)⁠つ​

Answer 1

1. 2x^2 + 6x - 5 = 0

a = 2 | b = 6 | c = -5

a. p+q = -b/a

= -6/2

= -3

b. p.q = c/a

= -5/2

c. p^2 + q^2

= (p1 + q2)^2 - 2x1.x2

= (-3)^2 - 2(-5/2)

= 9 + 10/2

= 29/2

d. 1/p + 1/q

= p1 + q2/p1.q2

= -3 ÷ -5/2

= -3/1 × -5/2

= -3/1 × -2/5

= -3 × -2/1 × 5

= 6/5

= 1 1/5

e. (p - q)^2

= p1^2 - 2x1.x2 + q2^2

= p1 + q2 - 2(-5/2)

= -3 + 10/2

= 4/2

= 2