If i'm getting paid 20$ a week to clean my house, and i need 600$ to buy a dog how many weeks would i have to clean?

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Ответ:

stephenandvicki

03.12.2021

Mathematics

the complete question is

The sum of the square of 2 number is 34. The first number is one less than twice the 2nd number. Find the number

Let

2x-1-------> the first number

x------->the second number

we know that

$(2x-1)^{2} +x^{2} =34\\ 4x^{2} -4x+1+x^{2} =34\\ 5x^{2} -4x-33=0\\ 5x^{2} -15x+11x-33=0\\ 5x*(x-3)+11*(x-3)=0\\ (5x+11)*(x-3)=0$

therefore

$x=3\\ 2x-1=5$

the answer is

the numbers are

3,5

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