CPM Homework Help : INT2 Problem 8-18

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Home > INT2 > Chapter 8 > Lesson 8.1.1 > Problem 8-18

8-18.

Solve each equation for $x$ .

$\frac { x } { 3.2 } = \frac { x ^ { 2 } } { 7.5 }$
Step (a):
$7.5x = 3.2x^2$

$4(x - 2) + 3(-x + 4) = -2(x - 3)$
Answer (b):
$x=\frac{2}{3}$

$2x^2 + 7x - 15 = 0$
Hint (c):
Factor and use the Zero Product Property.

$3x^2 - 2x = -1$
Hint (d):
Set the equation equal to $0$ then use the Quadratic Formula. Your solution should be complex.

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