2x^2-11x-21=0
solve it using factorisation
You asked:
Solve the equation \(2 {x}^{2} - 11 x - 21 = 0\) by factoring.
MathBot Answer:
$$\begin{aligned}0 &= 2 x^{2} - 11 x - 21\\&= \left(2 x + 3\right) \left(x - 7\right)\end{aligned}$$$$x \in \left\{- \frac{3}{2}, 7\right\}$$