3 years ago

Question 1 options:

Mathematics

1 answer:

Musya8 [376]3 years ago

3 0

Answer:

x = 1.56 or x = -2.56

Step-by-step explanation:

From the equation;

x2 +x − 4 = 0

a = 1 , b = 1, and c = -4

x = (-b ± √(b² -4ac))/2a

= (-1 ± √(1²- 4×1×-4))/2

= ( -1 ± √(17)/2

= (-1 ± 4.12)/2

= (-1 + 4.12)/2 or (-1 - 4.12)/2

<u>x = 1.56 or x = -2.56</u>

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