Объяснение:
x1= 4 ; x2=0,5 ;
d = x2- x1 = 0,5 - 4= -3,5
x11 = x1 + d ( n-1)= 4 + (-3,5 )*10 = 4 -35= -31
X² + 2bx - 3 = 0
3² + 2b * 3 - 3 = 0
9 + 6b - 3 = 0
6b = - 6
b = - 1
x² - 2x - 3 = 0
D = ( - 2)² - 4 * 1 * ( - 3) = 4 + 12 = 16 = 4²
Ответ: b = - 1 , x₂ = - 1
<span>у= -150/х</span>
<span>x=-15/8</span>
<span>y=-150/(-15/8)=150*8/15=80</span>
<span><span>D(-15/8 ; 80)</span></span>
1/3 = 3 в минус первой степени)))
3^x = 3^-1
x = -1
4x+y=-10
5x-2y=-19
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y=-4x-10
5x-2y=-19
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y=-4x-10
5x-2(-4x-10)=-19
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y=-4x-10
5x+8x+20=-19
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y=-4x-10
13x=-39,x=-3
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y=-4.(-3)-10=12-10=2,y=2
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/x,y/=/-3,2/
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