3 years ago

The product of a number and 7 is not less than 21

Mathematics

1 answer:

djverab [1.8K]3 years ago

6 0

The product of 3 and 7 is 21

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The length of one side of an ice cube is 2.5 cm. Calculate the volume of the ice cube.

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3 years ago

Perform the indicated operation. (5 - 2i 2) 2

nalin [4]

ANSWER

$(5 - 2 {i}^{2} ) ^{2} = 49$

EXPLANATION

The given expression is

$(5 - 2 {i}^{2} ) ^{2}$

This is an expression containing a complex number.

Recall that in complex numbers,

${i}^{2} = - 1$

The expression now becomes,

$(5 - 2 {i}^{2} ) ^{2} = (5 - 2 ( - 1) ) ^{2}$

This implies that,

$(5 - 2 {i}^{2} ) ^{2} = (5 + 2 ) ^{2}$

This will simplify to,

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This eventually gives us,

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3 years ago

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