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Serga [27]
3 years ago
6

Which of the following expressions is equal to 2x^(2)+8?

Mathematics
1 answer:
Rina8888 [55]3 years ago
4 0

Answer:

The expression equal to 2x^(2)+8 is:

First option (2x-4i)(x+2i)

Step-by-step explanation:

If we multiply

(2x-4i)(x+2i)=(2x)(x)+(2x)(2i)-(4i)(x)-4i(2i)

(2x-4i)(x+2i)=2x^(1+1)+4xi-4xi-8i^(1+1)

Simplifying:

(2x-4i)(x+2i)=2x^2-8i^2

and i^2=-1, then:

(2x-4i)(x+2i)=2x^2-8(-1)

Multiplying:

(2x-4i)(x+2i)=2x^2+8

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4 years ago
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luda_lava [24]

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8 0
2 years ago
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Could I get some help please?
slega [8]
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3 years ago
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