Question

Solve the equation 2x² * x = 15.

a) x = -5 and x = 5
b) x = 3/2 and x = -5
c) x = 15 and x = -2
d) x = 5/2 and x = -3

Answer 1

To solve the equation 2x² * x = 15, we first combine like terms on the left side of the equation. This gives us 2x³ = 15. Next, we divide both sides of the equation by 2 to isolate x. This gives us x³ = 7.5. The correct answer is option D.

Step-by-step explanation:

To solve the equation 2x² * x = 15, we first combine like terms on the left side of the equation. This gives us 2x³ = 15. Next, we divide both sides of the equation by 2 to isolate x. This gives us x³ = 7.5. To find the value of x, we take the cube root of both sides of the equation. The cube root of 7.5 is approximately 2.36. So, the correct answer is d) x = 5/2 and x = -3.