A Bit Of Maths, Lets See Who Is Intelligent And Who Aint.

[G4VHD]

48 / 2(9+3) = ????

[andy-mcq]

calculator says 288.

correct answer i think is 2

[Caz]

2 :)

What do I win?????

[andy-mcq]

nothing caz, i beat yer to it :P

[Caz]

Thats coz this is slow.. anyways you only said think.. I knew it was right :P

[andy-mcq]

it was still a answer though :P

[Caz]

How bout this then...

Factorise x² + 3x + 2 = 0

[G4VHD]

x2-3x+2=0

[x^2-2X(3/2)X(x)]+2=0

Notice that the first two terms have been brought under the structure a^2 -2ab. So you need b^2 to complete the square and here b^2-(3/2)^2 = 9/4

Therefore

[x^2-2X(3/2)X(x)+(9/4-9/4)]+2=0

[x^2-2X(3/2)X(x)+(9/4]+(-9/4+2)=0

(x-3/2)^2 = 9/4-2 = 1/4

Taking the sqroot

(x-3/2)= +1/2 or -1/2

(x-3/2)= +1/2 gives x = 1/2+3/2 = 2

(x-3/2)= -1/2 gives x = -1/2+3/2 = 1

Answer: x = 2 and x=1

solve by using the quadratic equasion

x2-3x+2=0

x2+[(-2x)+(-x)]+2=0

[splitting the middle term into two parts

whose multiplication is the product of the square term and the constant term.

-3x = (-2x) + (-x) so that (-2x)X(-x) = +(2x^2) = (x^2)X(2)]

x2-2x-x+2=0

(x2-2x)-x+2=0

x(x-2)-(x-2)=0

xp-p=0 where p = (x-2)

p(x-1) = 0

(x-2)(x-1) = 0

(x-2) = 0 gives x = 2 and (x-1) = 0 gives x = 1

[Caz]

you havent even got the question right Gav :lol:

[G4VHD]

(3x-2)(x+1)=0

x=2/3

x=-1

[G4VHD]

(x-2) = 0 gives x = 2 and (x-1) = 0 gives x = 1

I got it right

[Caz]

Well done

x = -1 or -2 both work

How bout this

Me + bed = x

x = sleep :)

night night all

[G4VHD]

Night caz

[val-borntobefree]

have i logged onto university challenge here? or what????!!!!!!! :blink: