Question

Rezolvatii ecuatiile :
a)2x(x-1)=10-x
b)x²+x+3=2+x
$\frac{x+2}{2 \sqrt{2} }$=$-\frac{\ \sqrt{2} }{2}$

Answer 1

a) 2x la puterea2-2=10-x 4x-2=10-x 4x-x=10+2 3x=12 x=12:3 x=4