Math people 25 points to answer this m

Use the discriminant to describe the roots of each equation. then select the best description. 2m2 + 3 = m double root real and rational roots real and irrational roots non-real roots

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?