Answer:
Step-by-step explanation:
0,5l + 1,5 (l + 7) = 0,5l
0,5l + 1,5l + 10.5 = 0,5l
1,5l = -10.5
l = -7
m = -7 -7
m = -14
When you multiply the equation out and you simplify like terms you get.
2x^2 + 6xy + 4y^2
-5 and -5 is what you are looking for negative time a negative equal positive
(-5,7 i should be the answer