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Vika [28.1K]
3 years ago
6

Solve for x and y in the system of equationy=x²-4x2x-y=2I'll mark brainliest​

Mathematics
1 answer:
Goryan [66]3 years ago
7 0

Step-by-step explanation:

y =  {x}^{2}  - 4x \\ y = x(x - 4) -  -  - (a) \\ 2x - y = 2 \\ y = 2x - 2 \\ y = 2(x - 2) -  -  - (b) \\ (a) = (b) :  \\ x(x - 4) = 2(x - 2) \\  {x}^{2}  - 4x = 2x - 2 \\  {x}^{2}  - 6x + 2 = 0 \\ x = 5.6 \:  \: and \:  \: 0.4 \\ y = 2(5.6 - 2) \:  \: and \:  \: 2(0.4 - 2) \\ y = 7.2 \:  \: and \:  \:  - 3.2

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