Please show how you worked it out.
X + y = 7
X(2) +y (2) = 25
Now I know x squared + y squared are 3 and 4 respectively but I got there by trial and error.
Please show how you worked it out.
X + y = 7
X(2) +y (2) = 25
Now I know x squared + y squared are 3 and 4 respectively but I got there by trial and error.
What’s x?
X = 7-y
(7-y) (2) + y(2) = 25
y(2) = 25 - (7-y)(2)
No idea kid.
Is the two supposed to be squared?
Yep
x could be 3 or it could be 4?
x =7 - y
(7-y)(7-y) + y(y) = 25
49 -14y + 2y(y) = 25
2y(2) -14y +24 = 0
y(2) - 7y + 12 = 0
(y-3) (y-4) = 0
y = 3 or 4
x = 3 or 4
It’s been a long time since I’ve done it, but I’m pretty sure that’s right.
Yeah it’s the young one doing some revision
Algebra & stats were the sections of maths that I was actually pretty handy at. And while it’s been a while since I’ve regularly done quadratics, it’s probably slight less time than most others here
Ah fuck it lad, I’ve been spending the last hour looking for common denominators, squaring things and even factoring by 3 trying to figure it out. Burnt the fucking dinner in the mean time
Spot on kid. And top marks for showing your work as well.
I was just coming in to post, I’ve bad news for you Mike there’s two answers
Go on…
The lad has em above, 3,4 and 3,4
I might be wrong but that seems like a very convoluted solution
It’s Leaving Cert maths, it’s supposed to be convoluted.
You could short cut it in your head but they are all the steps you’d have to take on the way to that point. And you need to show your work in case you make a balls of it
He was going grand for a while. But you shouldn’t end up with two answers.