Odpowiedź :
[tex]90a^{2}b^{2}c + 30ab^{2}c =abc(90ab+30b)\\\\\\180p^{2}q^{2}-90pqr = 135\\\\180p^{2}q^{2}-90pqr-135 = 0\\\\45(4p^{2}q^{2}-2pqr-3) = 0[/tex]
[tex]90a^{2}b^{2}c + 30ab^{2}c =abc(90ab+30b)\\\\\\180p^{2}q^{2}-90pqr = 135\\\\180p^{2}q^{2}-90pqr-135 = 0\\\\45(4p^{2}q^{2}-2pqr-3) = 0[/tex]