Question

4x^2+30x+15. Pls solve it

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

x = - 29.4 , -30.50

Step-by-step explanation:

D= b²-4ac

  = (30)² - 4 (4) (15)

  = 900 - 240

  = 660

x = - b ± √d / 2a

  = -30 ±√660/2(8)

  +ve value of x

x = -30 + √660/2(8)

   = -30 + 8.12/16

   = -29.4

-ve value of x

x =-30 - √660 / 2(8)

  = -30 - 8.12/ 16

  = - 20.50

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