Asked by Angel45
Perform the operations. Give the answer in a + bi form
(-2 square root -64)+(-7+square root -36)
(-2 square root -64)+(-7+square root -36)
Answers
Answered by
Bosnian
√- 64 = √ [ 64 ∙ ( - 1 ) ] = √ 64 ∙ √ ( - 1 ) = 8 i
√- 36 = √ [ 36 ∙ ( - 1 ) ] = √ 36 ∙ √ ( - 1 ) = 6 i
- 2√- 64 + ( - 7 ) + √- 36 = - 2 ∙ 8 i - 7 + 6 i = - 16 i - 7 + 6 i = - 7 - 10 i
√- 36 = √ [ 36 ∙ ( - 1 ) ] = √ 36 ∙ √ ( - 1 ) = 6 i
- 2√- 64 + ( - 7 ) + √- 36 = - 2 ∙ 8 i - 7 + 6 i = - 16 i - 7 + 6 i = - 7 - 10 i
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