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kykrilka [37]
2 years ago
10

Simplify: (5 + i)(5 − i) A) −12 B) 24i C) 26 D) 8i

Mathematics
2 answers:
Fofino [41]2 years ago
5 0

Answer:

C) 26

Simplify using the FOIL method--used to multiply binomials--and then combine real and imaginary parts of the problem.

5 × 5 = 25 + positive 1(i) = 26

Alik [6]2 years ago
4 0

Answer:

option c, 26

Step-by-step explanation:

(5 + i)(5 - i)

Apply complex arithmetic rule: (a + bi)(a - bi) = a^2 + b^2

a = 5, b =1

(5)^2 + (1)^2

(5)^2 = 25

(1)^2 = 1

25 + 1

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<h3>hello!</h3>

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<h3>note:-</h3>

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