Problem: -5-(15y-1)=2(7y-16)y
Please help getting stuck with the wrong answer repeatedly thank you
-5 - (15y - 1) = 2(7y - 16)y
-5 - 15y + 1 = (14y - 32)y
-4 - 15y = 14y^2 - 32y
-4 - 15y + 15y = 14y^2 - 32y + 15y
-4 = 14y^2 - 17y
-4 + 4 = 14y^2 - 17y + 4
0 = 14y^2 - 17y + 4 = 0
14y^2 - 17y + 4 = 0
Solve for y with the quadratic formula.
-b ± v(b² - 4*a*c)
y = ----------------------
2a
-(-17) ± v(-17² - 4*14*4)
y = -------------------------------
2(14)
17 ± v(289 - 224)
y = ------------------------
28
17 ± 8.0622577
y = ---------------------
28
17 + 8.0622577 17 - 8.0622577
y = --------------------- and y = ---------------------
28 28
25.0622577 8.9377422
y = ---------------- and y = ----------------
28 28
25.0622577 8.9377422
y = ---------------- and y = ----------------
28 28
y = 0.8950806 and y = 0.319205