3 years ago

Please help me with this question

Mathematics

2 answers:

Scrat [10]3 years ago

4 0

Answer: 136

Step-by-step explanation:

First, we need to find the conjugate before we can find the product of the conjugate and 6-10i.

The conjugate is the binomial with an opposite sign.

6+10i

Now that we have our conjugate, we can find the product.

(6-10i)(6+10i) [distribute the factors, FOIL method]

36+60i-60i-100i² [combine like terms]

36-100i² [i²=-1]

36-100(-1) [multiply and subtract]

36+100=136

Our product is 136.

Anettt [7]3 years ago

3 0

Answer:

136

Step-by-step explanation:

(6-10i)(6+10i)

36 +60i - 60i - 100i²

36 - 100i² (i² = -1)

36 + 100

136

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