solve the following equation for x
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let 2^x be y
so equation becomes
there is a printing error it must be 7 not 17
y²+2=7y-8
y²-7y+10=0
y²-5y-2y+10=0
y(y-5)-2(y-5)
y-2(y-5)=0
y=2
2^x=2
x=1
so equation becomes
there is a printing error it must be 7 not 17
y²+2=7y-8
y²-7y+10=0
y²-5y-2y+10=0
y(y-5)-2(y-5)
y-2(y-5)=0
y=2
2^x=2
x=1
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