Question

From the sum of (4+3x) and (5-4x+2x²) , subtract (-x²+2x+15)​

Answer 1

Step-by-step explanation:

$\mathbb\red{ \tiny A \scriptsize \: N \small \:S \large \: W \Large \:E \huge \: R}$

Adding 4+3x and $\sf 5-4 x+2 x^{2}$

$\\ \[ \begin{array}{l} \tt \Rightarrow 4+3 x+5-4 x+2 x^{2} \\ \\ \tt \Rightarrow 2 x^{2}-x+9 \end{array} \]$

$\text{ Now adding \( \tt 3 x^{2}-5 x \) and \( \tt -x^{2}+2 x+5 \)}$

$\\ \[ \begin{array}{l} \tt\Rightarrow 3 x^{2}-5 x-x^{2}+2 x+5 \\ \\ \tt \Rightarrow 2 x^{2}-3 x+5 \end{array} \]$

Now sublracting:-

$\\ \pmb{\[ \begin{array}{l} \tt \Rightarrow 2 x^{2}-x+9-\left(2 x^{2}-3 x+5\right) \\ \\ \tt \Rightarrow 2 x^{2}-x+9-2 x^{2}+3 x-5 \\ \\ \tt \Rightarrow 2 x+4 \text { .} \end{array} \]}$