2 years ago

BRAINLIEST!!!

Mathematics

2 answers:

daser333 [38]2 years ago

6 0

(6 + 5i)(10- 15i)
60- 90i +50i - 75i2
60- 40i -75i2
Answer is C

sineoko [7]2 years ago

3 0

Answer:

c) 60-40i-75i^2

Step-by-step explanation:

first you multiply out the brackets then collect like terms to get the answer

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AlladinOne [14]

Answer:

$-2x - h - 3$

Step-by-step explanation:

Step 1: Define

Difference Quotient: $\frac{f(x+h)-f(x)}{h}$

f(x) = -x² - 3x + 1

f(x + h) means that x = (x + h)

f(x) is just the normal function

Step 2: Find difference quotient

Substitute: $\frac{[-(x+h)^2-3(x+h)+1]-(-x^2-3x+1)}{h}$
Expand and Distribute: $\frac{[-(x^2+2hx+h^2)-3x-3h+1]+x^2+3x-1}{h}$
Distribute: $\frac{-x^2-2hx-h^2-3x-3h+1+x^2+3x-1}{h}$
Combine like terms: $\frac{-2hx-h^2-3h}{h}$
Factor out h: $\frac{h(-2x-h-3)}{h}$
Simplify: $-2x - h - 3$

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ruslelena [56]

Answer:

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Step-by-step explanation:

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olga2289 [7]

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Step-by-step explanation:

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