Tolong di isi dong kak, besok di kumpulin

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1.Tentukan nilai diskriminan x²-7x+10=0

2.Jika nilai diskriminan 2x²+5x+c=0 diskriminannya adalah 49 tentukan nilai c!​

Tolong di isi dong kak, besok di kumpulin

D = b² – 4ac

Nomor 1

x² – 7x + 10 = 0

a = 1

b = -7

c = 10

D = (-7)² – (4 × 1 × 10) = 49 – 40 = 9

Nomor 2

2x² + 5x + c = 0

a = 2

b = 5

D = 49

49 = 5² – (4 × 2 × c)

49 = 25 – 8c

49 – 25 = -8c

24 = -8c

24/-8 = c

-3 = c