3x^2 + 2x -4 if x = -2

asked by guest
on Dec 07, 2023 at 10:36 pm



You asked:

Calculate the value of \(3 {x}^{2} + 2 x - 4\) when \(x = -2\).

MathBot Answer:

\[3 {x}^{2} + 2 x - 4 = 4\]


$$\begin{aligned}3 x^{2} + 2 x - 4&=3 \left(-2\right)^{2} + 2 \left(-2\right) - 4\\&=2 \left(-2\right) + 3 \cdot 4 - 4\\&=3 \cdot 4 -4 - 4\\&=4\end{aligned}$$