\(x^5-2^3=235\)
=>\(x^5=235+2^3=235+8=243\)
=>\(x^5=3^5\)
=>x=3
b) Sửa đề:
x - (-29) = 100
x + 29 = 100
x = 100 - 29
x = 71
c) Sửa đề:
2ˣ.2⁹ = 1
2ˣ.2⁹ = 2⁰
x + 9 = 0
y = 0 - 9
x = -9
a)x5-23=235
x5=235+23
x5=235+8
x5=243
x5=243
243=35
x5=35
=> x=3
b)y-(-29)=10
y=(-29)+10=-(29-10)=-19
y=-19
c)2y:29=1
2y=1x29=29
2y=29
=> y=9
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