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Vladimir [108]
3 years ago
8

Help with 14, 15, and 16 please ?

Mathematics
1 answer:
lara31 [8.8K]3 years ago
4 0
14. 36x^2 - 16
      4(9x^2 - 4) =
      4(3x + 2)(3x - 2) <==

15. 3x^2 + 10x - 8
      (3x - 2)(x + 4) <==

16. 5x^2 - 16x + 15 = 4x - 5
      5x^2 - 16x - 4x + 15 + 5 = 0
      5x^2 - 20x + 20 = 0
      5(x^2 - 4x + 4)
      5(x - 2)(x - 2)
      x - 2 = 0....x = 2
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