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3 years ago

Solve the equation below for the exact values of 4x2-5=75

Mathematics

1 answer:

Gala2k [10]3 years ago

3 0

Answer:

x = ± 2 $\sqrt{5}$

Step-by-step explanation:

Given

4x² - 5 = 75 ( add 5 to both sides )

4x² = 80 ( divide both sides by 4 )

x² = 20 ( take the square root of both sides )

x = ± $\sqrt{20}$

= ± $\sqrt{4(5)}$

= ± 2 $\sqrt{5}$

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2 years ago

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4 years ago

Solve the equation below for the exact values of 4x2-5=75 ​

Solve the equation below for the exact values of 4x2-5=75