Tuklasin ang maliwanag na mga sagot sa iyong mga tanong sa IDNStudy.com. Makakuha ng impormasyon mula sa aming mga eksperto, na nagbibigay ng maaasahang sagot sa lahat ng iyong mga tanong.

Rewrite each equation in the form ax² +bx + c = 0, then give the corresponding value of a, b and c.

1. 18x² - 9x=7

2. y² + 15y =8y

3. 20 - x² = x

4. 0 = p² - 7p

5. m² = 16

6. -25t² + 4 = 0

7. (x + 3)² = 1

8. -3a = a² + 9

9. n² - 4 = 5 (n - 3)

10. 5j (j - 3) - 4 = j -6​​


Sagot :

Answer:

1. 18x² - 9x = 7

  • standard form: 18x² - 9x - 7 = 0
  • a = 18
  • b = -9
  • c = -7

2. y² + 15y = 8y

y² + 15y - 8y = 0

  • standard form: y² + 7y = 0
  • a = 1
  • b = 7
  • c = 0

3. 20 - x² = x

20 - x² - x = 0

-x² - x + 20 = 0

-1(-x² - x + 20 = 0)

  • standard form: x² + x - 20 = 0
  • a = 1
  • b = 1
  • c = -20

4. 0 = p² - 7p

-p² + 7p = 0

-1(-p² + 7p = 0)

  • standard form: p² - 7p = 0
  • a = 1
  • b = -7
  • c = 0

5. m² = 16

  • standard form: m² - 16 = 0
  • a = 1
  • b = 0
  • c = -16

6. -25t² + 4 = 0

-1(-25t² + 4 = 0)

  • standard form: 25t² - 4 = 0
  • a = 25
  • b = 0
  • c = -4

7. (x + 3)² = 1

(x + 3)(x + 3) = 1

x² + 3x + 3x + 9 = 1

x² + 6x + 9 - 1 = 0

  • standard form: x² + 6x + 8 = 0
  • a = 1
  • b = 6
  • c = 8

8. -3a = a² + 9

-3a - a² - 9 = 0

-a² - 3a - 9 = 0

-1(-a² - 3a - 9 = 0)

  • standard form: x² + 3a + 9 = 0
  • a = 1
  • b = 3
  • c = 9

9. n² - 4 = 5(n - 3)

n² - 4 = 5n - 15

n² - 4 - 5n + 15 = 0

  • standard form: n² - 5n + 11 = 0
  • a = 1
  • b = -5
  • c = 11

10. 5j(j - 3) - 4 = j - 6

5j² - 15j - 4 = j - 6

5j² - 15j - 4 - j + 6 = 0

  • standard form: 5j² - 16j + 2 = 0
  • a = 5
  • b = -16
  • c = 2