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
i dont understand that equation :S
oh dear lol
i am finding quite hard and challenging but do able how about you?
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