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Vladimir79 [104]

3 years ago

5

Add parentheses to solve the equation 16+3*4-2+5=21

1 answer:

Shalnov [3]3 years ago

5 0

Answer:4

Step-by-step explanation:

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Can you help me solve this please

OLga [1]

Answer:

-22+27i

Step-by-step explanation:

$i = \sqrt{ - 1} \\ (3 - 4i)( - 6 + i) \\ = (3 - 4 \sqrt{ - 1} )( - 6 + \sqrt{ - 1} ) \\ = 3( - 6 + \sqrt{ - 1)} - 4 \sqrt{ - 1} ( - 6 + \sqrt{ - 1} ) \\ = - 18 + 3 \sqrt{ - 1} + 24 \sqrt{ - 1} - 4 \\ = - 22 + 27 \sqrt{ - 1} \\ putting \: \: \: \sqrt{ - 1 } = i \\ = - 22 + 27i$

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telo118 [61]

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That is has root -12 meaning if you replace x with -12 you get 0.

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Step-by-step explanation:

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