Question

dear guys, please answer my questions and useless answers will be reported. I will mark the best as brainliest and open the full picture ​dear guys, please answer my questions and useless answers will be reported. I will mark the best as brainliest and open the full picture. Now if you know answers then only give. I please u all​

Answer 1

Answer:

answer for the given problem is given

Answer 2

Cost Price = 15x² + 3y + 20 .

Given :-

• Selling price of mobile phone = 30x² + 20y + 17.

• Profit on mobile phone = 15x² + 17y - 3.

To Find :-

• Cost price of mobile phone.

Solution :-

As we know that,

Selling Price - Cost Price = Profit

=> Selling Price - Profit = Cost Price

=> 30x² + 20y + 17 - (15x² + 17y - 3) = Cost Price

=> (30-15)x² + (20 - 17)y + (17 + 3) = Cost Price

=> 15x² + 3y + 20 = Cost Price

Thus, the cost price of mobile phone is 15x² + 3y + 20.