Questions: Evaluate the given expression for x=-9. 7x^2-3x-2

Transcript text: Evaluate the given expression for $x=-9$. \[ 7 x^{2}-3 x-2 \]

Solution

Step 1: Substitute $ x = -9 $ into the expression

Given the expression: \[ 7x^2 - 3x - 2 \] we substitute $ x = -9 $ into the expression.

Step 2: Calculate $ 7x^2 $

First, calculate $ 7(-9)^2 $: \[ 7(-9)^2 = 7 \cdot 81 = 567 \]

Step 3: Calculate $ -3x $

Next, calculate $ -3(-9) $: \[ -3(-9) = 27 \]

Step 4: Combine all terms

Combine all the terms: \[ 567 + 27 - 2 = 592 \]

\[ \boxed{592} \]

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