Steve S. answered • 01/23/14
Tutor
5
(3)
Tutoring in Precalculus, Trig, and Differential Calculus
9x^2 + 4 =
(3x)^2 - (2i)^2 =
(3x - 2i)(3x + 2i)
2 Answers By Expert Tutors
Parviz F. answered • 01/23/14
Tutor
4.8
(4)
Mathematics professor at Community Colleges
9 X^2 + 4 = ( 3X + 2i) ( 3X - 2i) i = √-1
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