
Arturo O. answered 11/21/19
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Experienced Physics Teacher for Physics Tutoring
4x2 - 25x2 = 21
-21x2 = 21
-21x2 - 21 = 0
21(x2 + 1) = 0
21(x + i)(x - i) = 0
x = ±i
Trish A.
asked 09/02/194x2
-25x2
=21
Arturo O. answered 11/21/19
Experienced Physics Teacher for Physics Tutoring
4x2 - 25x2 = 21
-21x2 = 21
-21x2 - 21 = 0
21(x2 + 1) = 0
21(x + i)(x - i) = 0
x = ±i
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