How would you factor 4x^2 + 9?
I think the answer has imaginary numbers in it, but how would you get the solution?

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4x^2 = -9
x^2 = -9/4
x = +/- SQRT(-9/4)
x = +/- 3/2(i)

Couldn't you just do the square root of both sides to get
2x= SQRT(-9)
?

you would get 2x = +- sqrt(-9)

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