find y when x = 5

585

Step-by-step explanation:

y = 5x³ - 8x     Let x = 5

  = 5(5)³ - 8 × 5

  = 5 × 125 – 40

  = 625 – 40

  = 585

For this case, we have an equation of the form, where , we must replace in the following equation:

Solving the power:

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

nada

step-by-step explanation: