Question

2x to the power of 2 + x = ? When x=9

Answer 1

171

Explanation:

`\text{Put}\ x=9\ \text{to the expression}\ 2x^2+x:\\\\2(9^2)+9=2(81)+9=162+9=171`

Answer 2

Explanation:

2x to the power of 2 + x = ? When x=9

(2x)^2 + x

= 4x^2 + x

When x = 9

= 4(9)^2 + 9

= 4(81) + 9

= 324 + 9

= 333