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vivado [14]
3 years ago
9

Which of the following are solutions to the equation below? Check all that apply. 9x2 – 64 = 0

Mathematics
2 answers:
erik [133]3 years ago
6 0

Answer:

x= 8/3 and x= -8/3

Step-by-step explanation:

Remember the difference of two squares method

a²- b²= (a+b) (a-b)

Given;

9x²-64=0

We notice 9 and 64 are in square form thus can be written as

(3x-8) (3x+8)....................................applying the difference in squares method to simplify

Solving for x

(3x-8) (3x+8) =0

3x-8=0

3x=8

x= 8/3

or

3x+8=0

x= -8/3

Andrej [43]3 years ago
6 0

Answer:

8/3 and -8/3

Step-by-step explanation:

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