105 is ur answer for this question
answer: 7x^ - 5x^2 + x + 2
step-by-step explanation: i think thats it
Step-by-step explanation:
the first option is correct.
{(2,9),(5,9),(1, -6),(-5, 5)}
Answer:
a1 = 4
a2= -2
a3 = -8
a4= -14
a5= -20
Step-by-step explanation:
a12= a1 + 11d
-62 = 4 + 11d
-62-4 = 11d
-66= 11d
d =
= -6
a1 = 4
a2 = 4 - 6 = -2
a3 = 4 - (6×2) = -8
a4 = 4 - (6×3) = -14
a5 = 4 - (6×4) = -20
X - y = 1....multiply by -5
5x - 4y = 0
---------------
-5x + 5y = -5 (result of multiplying by -5)
5x - 4y = 0
---------------add
y = -5
x - y = 1
x - (-5) = 1
x + 5 = 1
x = 1 - 5
x = -4
solution is (-4,-5)