Question

Calculate the difference (4x^2 + x – 5) – (5x^2 – 1).A9x^2 + x - 6B9x^2 + x - 4C-x^2 + x - 4Dx^2 + x - 6

Answer 1

The question can be interpreted as follow:

$(4x^2+x-5)-(5x^2-1)$

Step 1: Open parentheses

$\begin{gathered} 4x^2+x-5-5x^2-(-1) \\ 4x^2+x-5-5x^2+1 \end{gathered}$

Step 2: Group the terms by grouping similar terms

$4x^2-5x^2+x-5+1$

Step 3: simplify the expression

$-x^2+x-4$

Therefore the answer is

-x^2 + x - 4

The correct answer is option C