Y=x²+2b+4 x0=-2/2=-1 x=-1
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A1=-16 d=3
s₁₀=(2a₁+d(n-1))/2*n=(2*(-16)+3*9)*10/2=(-32+27)*5=(-5)*5=-25
<span><span>4⁵-2х = 0,25
2х = 4⁵ - 0,25
х = (4⁵ - 0,25) / 2 = <span> (<span>1024 - 0,25 = 1023,75) / 2 = <span>511,875.
Можно по другому:
4</span></span></span>⁵ = 2¹⁰
0,25 = 1/4 = 1/2² = 2⁻²
2х = 2¹⁰ - 2⁻²
х = 2⁹ - 2⁻³ = <span><span> 512 - 0,125 = <span>511,875 </span></span></span></span></span>
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Удачи вам!!)))
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