Question

question 4
simplify.
$(5x - 2 + 3x^2) + (4x + 3)$
$\circ 3x^2 + 9x - 1$
$\circ 3x^2 + x + 5$
$\circ 3x^2 + 9x + 1$
$\circ 12x^4 + 1$

Explanation:

Step1: Remove parentheses

Remove the parentheses from the expression \((5x - 2 + 3x^2) + (4x + 3)\), we get \(5x - 2 + 3x^2 + 4x + 3\).

Step2: Combine like terms

Combine the \(x\) terms: \(5x + 4x = 9x\).
Combine the constant terms: \(-2 + 3 = 1\).
The \(3x^2\) term remains as it is.
So the simplified expression is \(3x^2 + 9x + 1\).

Answer:

\(3x^2 + 9x + 1\) (corresponding to the option " \(3x^2 + 9x + 1\)")