137k views
1 vote
Solve this quadratic equation using the quadratic formula. 2X^2 - 10x + 5 = 0

User Bombastic
by
8.6k points

2 Answers

2 votes

Answer is

5 + √15 or 4.43649 decimal

2

and

5 - √15 or .56350 decimal

2

Step by step

Given 2x^2 -10x +5 = 0

Quadratic formula

-b +- √ b^2 - 4 a c

2a

- -10 +- √ -10^2 (-4)(2)(5)

2(2)

Simplify

10 +- √ 100 - 40

2(2)

10+- √ 60

2(2)

Factor out √60 = 2^2 * 3 * 5

Rewrite after moving 2 outside √

10 +- 2 √15

2(2)

Divide out one of the “2’s” with terms outside the √

5 +- √15

2

Solve

5 + √15

2

5 - √15

2

User Tim McLean
by
7.9k points
1 vote

Answer:

If I am not mistaken, the answer is:

x1: 4.436

x2: 0.564

Explanation:

User Anko
by
7.9k points

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