Giải phương trình x2(x+2)(11x-7)=4
Giải thích
x2+x+211x−7=4⇔x2+11x2+15x−14−4=0⇔12x2+15x−18=0⇔4x2+5x−6=0⇔4x2+8x−3x−6=0⇔4xx+2−3x+2=0⇔x+24x−3=0⇔x=−2x=34
x2+x+211x−7=4⇔x2+11x2+15x−14−4=0⇔12x2+15x−18=0⇔4x2+5x−6=0⇔4x2+8x−3x−6=0⇔4xx+2−3x+2=0⇔x+24x−3=0⇔x=−2x=34