225k views
2 votes
Solve for x 6x^2-5+-21=0

User Beloo
by
8.2k points

1 Answer

2 votes

Answer:

Explanation:

I believe your 6x^2-5+-21=0 should be 6x^2 - 5x - 21=0.

Let's use the quadratic formula to solve for x.

Here the coefficients are a = 6, b = -5 and c = -21.

The discriminant is b^2-4ac, which here is (-5)^2 - 4(6)(-21), or 529.

The square root of 529 is 23.

Thus, the roots (solutions) are:

-(-5) ± 23 28

x = ----------------- = ------ = 7/3 and also x = -3/2

2(6) 12

User Dusual
by
8.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories