138k views
5 votes
-40x = 16x2 + 38
Need the steps to solve this please

1 Answer

3 votes

Answer:

-1.25 ± 0.90i correct to the nearest hundredth

Explanation:

-40x = 16x2 + 38

16x^2 + 40x + 38 = 0 Simplify by dividing by 2:

8x^2 + 20x + 19 = 0

Using the quadratic formula:

x = [ -b ±√(b^2 - 4ac) ] / 2a

Plug in the coefficients of our equation:

x = [ -20 ±√(20^2 - 4*8*19) ] / 2*8

= -5/4 ± √(-208)/16

= -5/4 ± 14.4222i/16

= -1.25 ± 0.90i correct to the nearest hundredth.

User Nyuen
by
8.2k points
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