A level maths. given that y=2to the power x, find expression in terms of y for *2 to the power x +2 *2 to the power 3-x

Show that using the substitution y=2 to the power x, the equation

2to the power x+2 + 2 to the power 3-x = 33 can be written as 4y squared - 33y +8= 0

HENCE SOLVE THE EQUATION

2 TO THE POWER X+2 +2 TO THE POWER 3-X =33

SOURCE FROM -AS MATHS C1 PAPER B, GCE Examinations, advanced subsidiary

sweetnessedna@hotmail.com

i dont understand that equation :S oh dear lol x

i am finding quite hard and challenging but do able how about you?

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A level maths.

given that y=2to the power x, find expression in terms of y for

*2 to the power x +2

*2 to the power 3-x

Show that using the substitution y=2 to the power x, the equation

2to the power x+2 + 2 to the power 3-x = 33

can be written as

4y squared - 33y +8= 0

HENCE SOLVE THE EQUATION

2 TO THE POWER X+2 +2 TO THE POWER 3-X =33

SOURCE FROM -AS MATHS C1 PAPER B, GCE Examinations, advanced subsidiary

sweetnessedna@hotmail.com

i dont understand that equation :S

oh dear lol

x

i am finding quite hard and challenging but do able how about you?