Question

radical 2x+radical 2-x=2-radical 2
ma poate ajuta cineva cu acest ex?

Answer 1

√2x+√2-x=2-√2
√2x-x=2-2√2
x(√2-1)=2(1-√2)
x=2(1-√2)/(√2-1)
x=-2

Answer 2

$\sqrt{2} x+ \sqrt{2} -x=2- \sqrt{2} \\ \sqrt{2} x-x=2- \sqrt{2} - \sqrt{2} \\ \sqrt{2} x-x=2-2 \sqrt{2} \\ x( \sqrt{2} -1)=2(1- \sqrt{2} ) \\ x= \frac{2(1- \sqrt{2} )}{ \sqrt{2} -1} \\ x=-2$