What is the product of complex numbers (-3i +4) and (3i +4)??? please explain
2 answers:
Product of complex numbers (-3i +4) and (3i +4)
(x - y)(x + y) = x² - y²
(-3i +4)(3i +4) = (4 -3i )(4 + 3i) = 4² - (3i)² = 16 - 9*(-1)=16 + 9 = 25
Answer:

Step-by-step explanation:
1. First writhe the complex numbers to multiply:

2. Multiply the first term of the first parentheses by the first term of the second parentheses:

3. Multiply the first term of the first parentheses by the second term of the second parentheses:

4. Multiply the second term of the first parentheses by the first term of the second parentheses:

5. Multiply the second term of the first parentheses by the second term of the second parentheses:
4*4=16
6. Write all the terms:

7. Add up the terms:

8. As
:

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