CPM Homework Help : A2C Problem 11-171

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Home > A2C > Chapter 11 > Lesson 11.3.4 > Problem 11-171

11-171.

If $f \left(x\right) = x^{2} + 7x$ , calculate the values described below.

Hint:

For parts (a)-(d), substitute the value for x and simplify.

$f \left(2\right)$

$f \left(−3\right)$

$f \left(i\right)$

$f \left(−3.5 + 1.5i\right)$
Answer (d):
$x = −14.5$

Solve $f \left(x\right) = 0$
Hint (e):
Factor $x^{2} + 7x = 0$ .
Answer (e):
$x = 0 \text{ and } x = −7$

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