2 years ago

Is the square root of 111 rational or irrational

Mathematics

1 answer:

aalyn [17]2 years ago

5 0

The answer to this question is 12,321

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For all real numbers x and y, if x # y = x(x-y), then x # (x # y) =

kati45 [8]

$x\#y=x(x-y)\\\\x\#(x\#y)\\\\x\#y=x(x-y)=x^2-xy\\\\x\#(x\#y)=x\#(x^2-xy)=x[x-(x^2-xy)]=x(x-x^2+xy)\\\\=x^2-x^3+x^2y$

$x^2-x^3+x^2y=8\\\\x^2(1-x+y)=8\\\\x^2(1-x+y)=2^2\cdot4\iff x^2=2^2\ and\ 1-x+y=4\\\\x=2\ and\ y=4-1+x\\\\x=2\ and\ y=3+2\\\\x=2\ and\ y=5$

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3 years ago

Read 2 more answers

Is this a direct variation problem

Llana [10]

Yes and for a. You can just put y=x [y=1x is bascually the same but just the 1 isnt needed]

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3 years ago

What is 22 less than 15

blsea [12.9K]

Answer: Algebraic: 15-22

Simply:-7