Maths Question (1 Viewer)

[DuraSoft]

How do i put 8x - x^2 + 15 in p - (x + q)^2 form?
Got that in my half yearlies and want to know the answer
Well i got 32 - (x - 4)^2 but looking at the form the bracket inside is + not - so please help me

 

[bouncing]

How do i put 8x - x^2 + 15 in p - (x + q)^2 form?
Got that in my half yearlies and want to know the answer
Well i got 32 - (x - 4)^2 but looking at the form the bracket inside is + not - so please help me

hey okay i think this is right?
(sorry i couldnt use the thing properly so all the words are connected) :S

 

[hscishard]

hey okay i think this is right?
(sorry i couldnt use the thing properly so all the words are connected) :S

Line 5 doesnt look right

 

[hscishard]

How do i put 8x - x^2 + 15 in p - (x + q)^2 form?
Got that in my half yearlies and want to know the answer
Well i got 32 - (x - 4)^2 but looking at the form the bracket inside is + not - so please help me

Should be a 31. Expanding the brackets give back the original form...so I guess you're right.

Or do you mean why it isn't a + inside. If you're asking that then, q is actually -4. So (x+q)^2, [x+(-4)]^2 = (x-4)^2

 

[ohexploitable]

lol

It should be:




Then you get p=31 and q=-4

 

[ohexploitable]

but looking at the form the bracket inside is + not - so please help me

 

[ohexploitable]

Prelim: Maths, Maths ext, Eng Adv, Physics, Chemistry and IPT

How come you only have 11 units?

 

[hscishard]

How come you only have 11 units?

I do studies of religion,1 unit. Lol, not important enough to be in my sig.

 

[DuraSoft]

Should be a 31. Expanding the brackets give back the original form...so I guess you're right.

Or do you mean why it isn't a + inside. If you're asking that then, q is actually -4. So (x+q)^2, [x+(-4)]^2 = (x-4)^2

Whoops my mistake and thanks guys for the help, now that i got that reassured i can now confidently say i can get 100% in my half yearlies for hsc

 

[bouncing]

oops
damnn my silly mistakes

 

[bouncing]

sorry!