Let f(x)=x^2-3x -7 find f (-3)...
1 answer:
Replace the variable x<span> with </span><span>−3</span><span> in the </span>expression<span>.
</span><span>f(−3)=(−3<span>)^2</span>−3(−3)−7
</span>Simplify each term<span>.
</span><span>f(−3)=9+9−7
</span>Add 9<span> and </span>9<span> to get </span><span>18.
</span><span>f(−3)=18−7
</span>Subtract 7<span> from </span>18<span> to get </span><span>11.
</span><span>f(−3)=11
</span>The final answer is <span><span>11.
11</span></span>
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