Question

Add: x3-2x²-9; 5x3+2x+9​

Answer 1

Answer:

$\large \underbrace \mathfrak \red{Solution\:\:࿐꧂}$

${x}^{3} - 2 {x}^{2} - 9 + 5 {x}^{3} + 2x + 9$

$6 {x}^{3} - 2 {x}^{2} + 2x$