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i is equal to the square root of negative one
3 * square root of negative one times -4 * square root of negative one
totally simplified it is 2i√(3)
3i times -4i equals -12 times i squared. i squared equal -1, so -12 times -1 equals 12.
(x - 4i)(x + 4i) where i is the square root of -1
- - x + 3 = x + 3
Without further information, it is not possible to evaluate or simplify the expression.
3x+3-2x=3 x+3=3 x-0
simplify means to get an expression to its simplest form (a.k.a. combine like terms, add together constants) i.e. x + x + 5 + 3 simplified is 2x + 8