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3 years ago

Solve: 16x2 − 81 = 0

Mathematics

2 answers:

MrRa [10]3 years ago

8 0

Answer:

x =±9/4

Step-by-step explanation:

16x^2 − 81 = 0

Add 81 to each side

16x^2 − 81 +81 = 81

16 x^2 =18

Divide by 16

x^2 =81/16

Take the square root of each side

sqrt(x^2) = sqrt(81/16)

x =±9/4

Musya8 [376]3 years ago

7 0

16 x 2 - 81

32-81

= -49

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