19aoldham 19aoldham
  • 07-06-2018
  • Mathematics
contestada

solve the equation by completing the square w2+3w-5=0

the answer is 1.19, -4.19

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sqdancefan
sqdancefan sqdancefan
  • 14-06-2018
(w² +3w +(3/2)²) -5 -(3/2)² = 0 . . . . . add and subtract the square of half the w coefficient
(w +3/2))² - 7.25 = 0 . . . . rewrite as square
w = -1.5 ±√7.25 . . . . . . .. add 7.25, square root, subtract 1.5

w ≈ {1.193, -4.193}
Ver imagen sqdancefan
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maddymcg408
maddymcg408 maddymcg408
  • 04-08-2021

Answer:

1.19, –4.19

Step-by-step explanation:

(b2)2=(32)2w2+3w+94(w+32)2w+32===≈945+94294±  2.69  

w+1.5ww+1.5w≈≈or≈≈2.691  .  19−  2.69−  4  .  19

Answer Link

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