3 years ago

I need help brosssssssssss

Mathematics

1 answer:

gavmur [86]3 years ago

5 0

Answer
B. Is the answer.

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diketahui akar akar persamaan kuadrat 2x^2-9x + 7 = 0 adalah x1 dan x2. nilai dari x1^2 + x2^2- 4x1x2 adalah...

Leviafan [203]

jika xy = 0 , kemudian menganggap x dan y = 0

faktor 2x^2-9+7
(2x-2)(x-7)=0

2x-2=0
2x=2
x=1

x-7=0
x=7

jika 1 = x1 dan 7 = x2 maka jawabannya adalah 1^2+7^2-4(1)(7)=22

jika 7 = x1 dan 1 = x2 maka jawabannya adalah
7^2+7^2-4(7)(1)=22

jawabannya adalah 22

6 0

3 years ago

Which would be the correct answer!

Blizzard [7]

Answer:

I think also option c ok

8 0

2 years ago

Sum of the radius of the base and height of a cylinder is 21 cm and the curved surface area of the cylinder is 616 sq.cm,find th

Kobotan [32]

Step-by-step explanation:

lets radius be r and height be h,