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3 years ago

Find the value of x. A 7x + 10 с В 00 9x - 2 D

Mathematics

1 answer:

WARRIOR [948]3 years ago

5 0

Answer:

Step-by-step explanation:

AB = BD

so, 7x + 10 = 9x -2

or, 10 + 2 = 9x -7x

or, 12 = 2x

or, 6=x

Therefore, x=6

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3 years ago

If (a-bi)^2 = 13 - 12i, what is the product of a and b?

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Answer:

$\large \boxed{\sf \ \ \ a\cdot b= 6 \ \ \ }$

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Hello,

$(a-bi)^2 = 13 - 12i\\\\ a^2+(bi)^2-2abi = 13-12i\\\\a^2-b^2-2abi=13-12i$

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