Question

3052
The roots of the equation x² + x = 2(x - 1) are
5
[1] imaginary
[3] irrational
[2] rationa
[4] equal
61
2012
Option 1
Option 2
Option 3
Option 4
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esponse​

Answer 1

Answer:

(3). Imaginary

Step-by-step explanation:

ax² + bx + c = 0

If D = b² - 4ac > 0, then roots are real numbers.

If D = b² - 4ac = 0, then roots are equal real numbers.

If D = b² - 4ac < 0, then roots are imaginary numbers.

x² + x = 2(x - 1)

x² - x + 2 = 0

D = (- 1)² - 4(1)(2) = - 7 < 0 ⇒ The roots of an equation are imaginary numbers.