Question

Which of the following expressions are written in standard form? Choose ALL that apply.

Answer 1

`A. \;x^2 -7x + 1`

`B.\;5x^2 + 2x`

Explanation:

Standard Form of Polynomial
Standard form of a polynomial is written in the descending order of the power of the variable.

The standard form of polynomial is given by

`f(x) = a_nx^n + a_(n-1)x^(n-1)+....... + a_1x + a_0`
where
`x` is the variable and
`a_i,\; i = 0...n` are coefficients.

The only two expressions in standard form are

`A. \;x^2 -7x + 1`

and

`B.\;5x^2 + 2x` (here the constant a₀ is 0)