Question

calcule
A) m² + 6 mn + n² para m =2/3 e n = - 1/2

B) a² + 2a-b/ a + b quando a = -2 e b = 10

Answer 1

a) m²+6mn+n²
(2/3)²+6(2/3)(-1/2)+(-1/2)²
4/9-2+1/4=
16-72+9/36
-37/36
b) a²+2a-b/a+b
(-2)²+2(-2)-10/-2-10
4-4-10/-12
4-14/12
4-7/6=
24+7/6
31/6