√5•(14+2√5)=14•√5+2•√5•√5=14√5+10
-6(0,5x - 1,5) - 4,5x - 8 = - 3x + 9 - 4,5x - 8 = - 7,5x + 1
Если 
то
Это задача не для математики, а для программирования.
Эти числа:
n = 198; n^2 + 8n - 85 = 40703 = 403*101
n = 299; n^2 + 8n - 85 = 91708 = 908*101
n = 400; n^2 + 8n - 85 = 163115 = 1615*101
n = 501; n^2 + 8n - 85 = 254924 = 2524*101
n = 602; n^2 + 8n - 85 = 367135 = 3635*101
n = 703; n^2 + 8n - 85 = 499748 = 4948*101
n = 804; n^2 + 8n - 85 = 652763 = 6463*101
n = 905; n^2 + 8n - 85 = 826180 = 8180*101
<span>1)(a x^2+b x^2)x^3 = a x^5 + b x^5</span>
<span><span>2)(x x^2-y x^2)x^3 = x^6 - y x^5</span></span>
<span><span><span>3)(2m x^2-3n x^2)x^3 = 2m x^5 - 3n x^5</span></span></span>
<span><span><span><span>5)(4m x^3+n x^2)x^3 = 4m x^6 + n x^5</span></span></span></span>
<span><span><span><span><span>6)(10p x^4-6q x^2)x^3 = 10p x^7 - 6q x^5</span></span></span></span></span>
<span><span><span><span><span><span>7)(7u x^3-9v x^4)x^3 = 7u x^6 - 9vx^7</span></span></span></span></span></span>
<span><span><span><span><span><span><span>8)(10x x^3+3y x^2)x^3 = 10x^7 + 3y x^5</span></span></span></span></span></span></span>
<span>S=n(n+1)/2 </span>
<span>105=n(n+1)/2 </span>
<span>n^2+n-210=0 </span>
<span>n1=-15 (не удовл.) </span>
<span>n2=14 </span>
<span>14 отрезков => 15 точек</span>
