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Alinara [238K]
3 years ago
5

Y = 2x2 - 3x - 20?

Mathematics
1 answer:
nikitadnepr [17]3 years ago
4 0
2x² - 3x - 20

40
2 20
4 10
5 8

2x² - 8x       5x - 20
2x(x - 4)      5(x - 4)
(2x + 5) (x - 4)
2x + 5 = 0      x - 4 = 0
2x = -5          x = 4
x = -5/2
C) x = -2.5 and 4
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