Question
Find roots of polynomial $$ p(x) = x+x-3x-7 $$
Answer
The root of polynomial $ p(x) $ is:
$$ \begin{aligned}x &= -7 \end{aligned} $$Explanation
Step 1:
Combine like terms:
$$ \color{blue}{x} + \color{red}{x} \color{red}{-3x} -7 = \color{red}{-x} -7 $$Step 2:
$$ \begin{aligned} -x-7 & = 0 \\[1 em] -1 \cdot x & = 7 \\[1 em] x & = \frac{ 7 }{ -1 } \end{aligned} $$This page was created using
Polynomial Roots Calculator