Ok so I complete the square because I'm more comfortable with that:
x^2 - 10x + 0 = 0
x^2 - 10x = 0
x^2 - 5^2 = 5^2
(x-5)^2 - 25
this would mean p = 5 and q = -25?
This doesn't seem right? Have I gone wrong somewhere?
Homework Statement
Express x^2 - 10x in the form (x+p)^2 + q
State the value of P and Q
The Attempt at a Solution
I don't know! I don't get it because when I times out the brackets p will always be a number, and there are no numbers that aren't multiplied by x in x squared minus 10...
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Does that make sense?
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Homework Statement
Sure I could do this by looking at the mark scheme, but i need to know HOW and WHY, so that in the future i can do these equations by myself. Thanks :)
by elimenating y, solve the simeltaneous equation
Homework Equations
x^2 + y^2 = 10
y = 2x - 5
The Attempt...