(5+2 i)(4-3i) - (5-2yi)(4-3i)

Factorize out (4 -3i)

(4 -3i)( (5 +2i) - (5 -2yi) )

= (4 -3i)(5 +2i - 5 + 2yi)

= (4 -3i)(5 - 5 + 2i + 2yi)

= (4 -3i)(2i + 2yi)

= (4 - 3i)(2 + 2y)i. Let's multiply the first two.

(4 - 3i)(2 + 2y) = 2*(4 -3i) + 2y*(4 - 3i)
 = 8 - 6i + 8y - 6yi
 = 8 + 8y - 6i - 6yi

(4 - 3i)(2 + 2y)i = (8 + 8y - 6i - 6yi)i Note: i² = -1
 = 8i + 8yi - 6i² - 6yi²
 = 8i + 8yi - 6(-1) - 6y(-1)
 = 8i + 8yi + 6 + 6y
 = 6 + 6y + 8i + 8yi
 = (6 + 6y) + (8 + 8y)i In the form a + bi

5 0

2 years ago

25 POINTS IF U TELL ME THE ANSWER I'LL GIVE U 20 POINTS AND MARK YOU AS BRAINLIEST

choli [55]

I am not sure about this. I am sure that 3 has atleast 1.

6 0

3 years ago

The Gomez family just purchased a $2,574.54 laptop computer. They made a down payment of $574.54. Through the store's installmen

Maurinko [17]

A) The amount financed is the purchase amount less the down payment.
$2,574.54 -574.54 = $2000.00

B) The finance charge is the total of payments less the amount financed.
18*$121.00 -2000.00 = $178.00

C) The APR is calculated by a financial calculator to be 10.96%.

3 0

2 years ago