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2 years ago

Perform the indicated operation. PLEASEE HELPP HURRYY!! (3 + i) + (5 + 7i) = A) -2 + 6i B) 2 + i C) 8 + 6i D) 8 + 8i

Mathematics

1 answer:

Dovator [93]2 years ago

7 0

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{8 + 8i}}}}}$

Option D is the correct option.

Step-by-step explanation:

$\sf{(3 + i) + (5 + 7i)}$

When there is a ( + ) in front of an expression in parentheses , there is no need to change the sign.

That means, the expression remains the same.

Just remove the unnecessary parentheses

⇒ $\sf{3 + i + 5 + 7i}$

Collect like terms and simplify

⇒ $\sf{3 + 5 + i + 7i}$

⇒ $\sf{8 + 8i}$

Hope I helped!

Best regards!!

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You can get the above multiples as follows:

120/2 = 60

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Take all the terms in the denominator for 120, you would get: 2 * 2 * 2 * 3 * 5 --- (1)

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Now in (1) and (2) consider the common terms once and multiple that with the remaining:

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Hence (2*2*2*3*5) * (3) = 360 = LCM (answer)

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