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Musya8 [376]
2 years ago
14

20 POINTS MARKING BRAINLEIST JUST BE QUICK

Mathematics
2 answers:
KATRIN_1 [288]2 years ago
6 0

3f^2 + 3f

Step-by-step explanation:

To find the opposite of f^2 + 3f +3 find the opposite of each term.

4f^2+ 6f+3-f^2-3f-3

combine 4f^2 and f^2 to get 3 f^2

mr Goodwill [35]2 years ago
3 0

Answer:

4f^2 - r^2 + 3r

Step-by-step explanation:

(4f^2 + 6r + 3) - (r^2 + 3r + 3)

Distribute

4f^2 + 6r + 3 - r^2 - 3r - 3

subtract +3 from -3

4f^2 + 6r - r^2 - 3r

combine like terms

4f^2 + 3r - r^2

rearrange terms

4f^2 - r^2 + 3r

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Leviafan [203]

Answer:

y=x^2+8x+13

Step-by-step explanation:

in standard form

y=x^2+8x+13

8 0
4 years ago
Josephine solved a quadratic equation. Her work is shown below.
mariarad [96]

Answer:

Step-by-step explanation:

hello :

5(x + 7)² = 245

(x + 7)² = 49

x=0 is solution but you have other solution -14 because :(-14+7)² = (-7)² =49

here is an solution Step-by-step :

(x + 7)² = 49  means : (x + 7)² = 7²

(x + 7)² - 7²=0   use identity : a²-b² = (a-b)(a+b)

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so : x=0 or x= -14

7 0
4 years ago
Trigonometry
MrRissso [65]

Answer:

3√15/4

Step-by-step explanation:

sin x = 2/8

  • from the trigonometric rule sin²x+cos²x = 1
  • cos²x = 1-sin²x

sinx = 2/8

sin²x = (2/8)² = 2²/8² = 4/64

1- sin²x = 1-4/64 = 64 -4/64 = 60/64 = 15/16

  • cos²x = 15/16

cos x = √(15/16) = √15 /4

  • cos 3x

3 x cos x = 3 x √15/4 = 3√15/4

6 0
3 years ago
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For the reflection and rotation
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Brilliant_brown [7]

Answer:

I don't think so because I tried it and that's what I got

Step-by-step explanation:

8 0
3 years ago
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