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tatyana61 [14]
3 years ago
9

The sum of two numbers is 8 and the diffrence is 6 what are the two numbers?

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
8 0
Let x and y be the 2 numbers
x + y = 8
x - y = 6

Add the 2 equations
2x = 14 => x = 7

Plug 7 into the first equation => y = 1
I really hope this helps!
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If x+y=6 and xy =2find x³+y³(please help me fast with explanation also please) T^T​
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Step-by-step explain:                                                                                            let's remember the formula                                                                                 x³+y³=(x+y)(x²-xy+y²) and also  x³+y³=(x+y)³-3xy(x+y)                                              then                                                                                      \displaystyle\boldsymbol{ x^3+y^3=\underbrace{(x+y)^3}_{6}-3\underbrace{xy}_{2}\underbrace{(x+y)}_6}=\\\\6^3-3\cdot 2\cdot 6=216-36=180                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

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3 years ago
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