Question

If you have 7x^2 + 3 if the input is 4 what is the output

Answer 1

`7x^2 + 3`
`x=4`

A Power is a short way to represent repeated multiplication. The power includes a base and an exponent. The base is the number that is multiplied. The exponent is the number of times the base is multiplied.

Note: The power of a negative base is positive if the exponent is even, and negative if the exponent is odd.

`7(4)^2 + 3`
`substitute \ 4 \ for \ x`


`7*16+3`
`Simplify \ 4^2 \ to \ 16`


`112+3`


`= 115`

Answer 2

7x^2 + 3
7(4)^2 + 3
7(16) + 3
112 + 3
115.