CPM Homework Help : CCA2 Problem 1-13

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1-13.

Use the Zero Product Property and factoring, when necessary, to solve for $x$ . The Math Notes box for Lesson 1.1.4 may be useful, if you need help.

$(x+13)(x−7)=0$
Hint (a):
Set each factor equal to $0$ , then solve for $x$ .
Answer (a):
$x=−13\ \text{or}\ x=7$

$(2x+3)(3x−7)=0$
Hint (b):
Refer to part (a).
Answer (b):
$x=-\frac{3}{2}\text{ or }x=\frac{7}{3}$

$x(x−3)=0$
Hint (c):
Refer to part (a).
Answer (c):
$x=0\ \text{or}\ x=3$

$x^2−5x=0$
Hint (d):
Factor the problem first, then set each factor equal to $0$ and solve for $x$ .
More Help (d):
$x(x−5)=0$
Answer (d):
$x=0\ \text{or}\ x=5$

$x^2−2x−35=0$
Hint (e):
Remember to factor first.

$3x^2+14x−5=0$
Hint (f):
Remember to factor first.

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