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# Simultaneous equation help watch

1. Y=x^2+2x-22
Y-3x=8
How do you solve? I am right in sayng y=8+3x
2. (Original post by Lucofthewoods)
Y=x^2+2x-22
Y-3x=8
How do you solve? I am right in sayng y=8+3x
Yes, then you can equate the two equations, then solve the resulting polynomial.
3. (Original post by Lucofthewoods)
Y=x^2+2x-22
Y-3x=8
How do you solve? I am right in sayng y=8+3x
Yes equate two expressions for y and solve quadratic as you normally would.
4. yes you can say that both versions of y are the same ?

y = 3x + 8 is the same as y = x2 + 2x - 22

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