(m-n) (n³-p³) - (n-p) (m³-n³)
(m-n)*( n-p)*(n^2+np+p^2)- (n-p)*(m-n)*(m^2+mp+p^2)
((n^2+np+p^2)-(m^2+mp+p^2)*((m-n)(n-p))
(n^2+np+p^2-m^2-mp-p^2)*(mn+mp-n^2+np)
(4x)`=4
(1)`=0
................
2t-mn+8nm-9k+10k-15z=2t+7mn+k-15z
<span> 4.</span><em>2х</em><span>2 - 18x + 40 = 0; 2у2 + у - 7 = 0; 0,</span><em>5 х</em><span>2 + 3x - 8 = 0. 2. </span>...<span> 4 и -3; -</span><em>6</em><span> и </span><em>5</em><span>; 2 - и 2 + . 3.</span>...<span> Дано: ах2 + bx + c = 0, где а = </span><em>1</em><span>, x</span><em>1</em><span> и x2 –корни квадратного уравнения</span>