Question

What is the value of 5x² + x if x = 4?​

Answer 1

x= 4

5(4)²+4 = 5*16 + 4 = 84

Step-by-step explanation:

Answer 2

84

Step-by-step explanation:

The expression is
`\sf{5x^2+x}`.

To evaluate it for x = 4, I plug in 4 for x:

`\sf{5(4)^2+4}`

Square 4 first:

`\sf{5*16+4}`

`\sf{80+4}`

Add:

`\sf{84}`

Hence, the answer is 84.