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3 years ago

Evaluate 9 - b when b = 8

Mathematics

2 answers:

Assoli18 [71]3 years ago

7 0

9 - b = ?
9 - 8 = 1
So, your answer is 1. Hope this helps, please mark brainliest and have an amazing day!

beks73 [17]3 years ago

5 0

Plug in 8 for b
9 - 8 = 1

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3 years ago

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we will proceed to solve each case to determine the solution of the problem

we know that

$i^{2} =-1$

case A. $15*(-15i)$

$15*(-15i)=-225i$

The result of case A is not a real number product

case B. $3i*(1-3i)$

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case C. $(8+20i)*(-8-20i)$

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The result of case C is not a real number product

case D. $(4+7i)*(4-7i)$

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The result of case D is a real number product

therefore

the answer is the option

$(4+7i)*(4-7i)$

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