You apparently began copying in the middle of the problem,
because ALL dimensions are missing from your question.
Answer:
a = 0.3 and b = - 1.1
Step-by-step explanation:
(x - 2)² = x² -4x + 4
Hence, x² - 4x + 4 = 3x - 6
x² - 7x + 10 = 0
(x - 5)(x - 2) = 0
∴ x = 5 or 2
f(5) = 25a + 5b = 2 ----- (i)
f(2) = 4a + 2b = -1 ------ (ii)
(i) X 2: 50a + 10b = 4 ----- (iii)
(ii) X 5: 20a + 10a = -5 ---- (iv)
Subtract (iv) from (iii): 30a = 9
a = 0.3
Substitute a into (ii) to obtain b
4(0.3) + 2b = -1
2b = -1 - 1.2 = -2.2
∴ b = -1.1
Let, the numbers are: x, (x+2), (x+4)
Now, x+x+2+x+4 = -27
3x + 6 = -27
3x = -33
x = -11
So, (x+2)=-11+2 = -9, (x+4) = -11+4 = -7
In short, Your Final answer would be -7,-9 and -11
Hope this helps!
The perimeter is 50 units