Step-by-step explanation:
We have xy = 28, x² + y² = 65 and x³ + y³ = 407.
Since (x + y)(x² - xy + y²) = x³ + y³,
x + y = (x³ + y³)/(x² + y² - xy)
= (407) / [(65) - (28)]
= 407 / 37
= 11.
Hence the sum of the numbers is 11.
5x+25 final answer is x=5
1260-360-360-360=180
Therefore,180
To find T, you add 25 to both sides, isolating the varible. This gives you T=-19
Hope this helped!
