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Use the quadratic formula to solve x^2 -5x+4 then describe the solution

1 Answer

5 votes

Answer:

see explanation

Explanation:

Equate the quadratic to zero

x² - 5x + 4 = 0 ← in standard form

with a = 1, b = - 5, c = 4

Using the quadratic formula to solve for x

x = ( -(- 5) ±
√((-5)^2-(4(1)(4)) ) / 2

= ( 5 ±
√(9) ) / 2

= ( 5 ± 3 ) / 2

x =
(5-3)/(2) or x =
(5+3)/(2), hence

x = 1 or x = 4

The solutions are real, rational and distinct

User Sikas
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