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Ivenika [448]
3 years ago
8

Please HELPP!!! Solve the system of equations. y= 2x y= x^2 - 15

Mathematics
1 answer:
Nataly [62]3 years ago
7 0

y=2x\\y=x^2-15\\\\x^2-15=2x\\x^2-2x-15=0\\x^2-5x+3x-15=0\\x(x-5)+3(x-5)=0\\(x+3)(x-5)=0\\x=-3 \vee x=5\\\\y=2\cdot(-3) \vee y=2\cdot5\\y=-6 \vee y=10\\\\(x,y)\in\{(-3,-6),(5,10)\}

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