Question

r ^ { 2 } + 10 r - 25 = 0 ecuación lineal ayuda a resolver​

Answer 1

r^2 + 10r - 25 = 0
0 + 25 = r^2 + 10 r
25 = r • r + 10r
25 = 2r + 10 r
25 = 12r
25/12 = r