Question

$2x {}^{2} + x - 4 = 0$
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Answer 1

Answer:

1.25 approx.

Step-by-step explanation:

2x² + x-4 = 0

2x³ - 4 = 0

2x³ = 0+4 = 4

x³ = 4/2 = 2

x = cube root of 2 = 1.25

Answer 2

Answer:

2x²+x-4= 0

2x²+x=0+4

=4

x²+x=2/4=2

x²=2

x=2/2

x=1