Solve the equation 2x^2 + 5x – 8 = 5/2x + 20 by writing a linear-quadratic system and solving using the intersection feature of

Question

2 years ago

14

a graphing calculator. Round to the nearest tenth.

2 answers:

Annette [7] · Answer 1 · 2022-04-14T08:45:02+03:00

5 0

Answer: it is A.

Step-by-step explanation:

NNADVOKAT [17] · Answer 2 · 2022-04-14T07:23:48+03:00

4 0

Answer:

Option (A)

Step-by-step explanation:

2x² + 5x - 8 = $\frac{5}{2}x + 20$

2(2x² + 5x - 8) = $2(\frac{5}{2}x+20)$

4x² + 10x - 16 = 5x + 40

4x² + 10x - 5x - 16 - 40 = 0

4x² + 5x - 56 = 0

By using graphing calculator,

x - intercepts are,

x = -4.4 and x = 3.2

Therefore, Option (A) will be the correct option.