Solving Quadratic Equations By Using The Quadratic Formula Worksheet With Answers Page 5
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41The solutions are –6 and
.
9-5 Solving Quadratic Equations by Using the Quadratic Formula
2
8. 2x
− 3x − 6 = 0
SOLUTION:
Solve using the quadratic formula.
For this equation, a = 2, b = –3, and c = –6.
Quadratic Formula:
The solutions are 2.6 and –1.1.
2
9. 9x
= 25
SOLUTION:
Solve by factoring.
Write the equation in standard form.
Factoring:
The solutions are
.
2
10. x
− 9x = −19
SOLUTION:
Solve by using the quadratic formula.
Write the equation in standard form.
For this equation, a = 1, b = –9, and c = 19.
Quadratic Formula:
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