prosze o rozw. jagoda: Rozwiąż równania a) x²(x+2)=2(x+2) b)x³−9x²+x−9=0

mm: a) x3+ 2x2 = 2x+4 x3+ 2x2 − 2x −4 = 0 x2(x+2) −2(x+2)=0 (x2−2)(x+2) = 0 x2−2 = 0 x2=2 x1 = √2 x2 = −√2 x+2=0 x=−2 odp. x1 = √2, x2=−√2, x3= −2

mm: b) x3−9x2+x−9 = 0 x2(x−9)+1(x−9)=0 (x2+1) (x−9)=0 x2+1 = 0 x1 = √1 = 1 x2 = −1 x−9 = 0 x3=9 odp. x1=1,x2=−1,x3=9