Question

What is 4xsquared minus 9 equals 0

Answer 1

±3/2

Explanation:

4x^2 - 9 = 0

4x^2 = 9

2x = 3

x = +-3/2

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Answer 2

x = ±3/2

Explanation:

4x^2 - 9=0

Add 9 to each side

4x^2 -9+9 =0+9

4x^2 =9

Divide each side by 4

4x^2/4 = 9/4

x^2 = 9/4

Take the square root of each side

sqrt(x^2) = ±sqrt(9/4)

x = ±sqrt(9)/sqrt(4)

x = ±3/2