4^x - 10 × 2^x+2 + 256 = 0 find x
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2^2x-10.2^x.2^2+256=0
Let2^x=t
t^2–40t+256=0
t^2–32t-8t+256=0
t(t-32)-8(t-32)=0
t=32,8
2^x=32
2^x=2^5
x=5
2^x=8
2^x=2^3
x. =3
Let2^x=t
t^2–40t+256=0
t^2–32t-8t+256=0
t(t-32)-8(t-32)=0
t=32,8
2^x=32
2^x=2^5
x=5
2^x=8
2^x=2^3
x. =3
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