Résoudre dans R² les systèmes suivants : -x + 4y = 2
x + 2y = 4
4x + y = -3
2x - y =6
svp aidez moi c urgent, merci beaucoup !!

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

Enter numbers to write 0.000328 0.000328 in scientific notation. 1 1 0.000328=3.28 × 0 . 000328 = 3 . 28 × =3.28×10 = 3 . 28 × 10