Question

5x(x+2)=3. Solve for x, using quadratic equation.​

Answer 1

Answer:

5x (x+2) = 3 5x2 + 10x - 3 = 0 D = b2 - 4ac = 100 - 4(5)(-3) = 100+60 = 160 x = (-b ± √D)/2a x = (-10 ± √160)/10 x = (-10 ± 12.64)/10 x = (-10 + 12.64)/10 or (-10 - 12.64)/10 x = 2.64/10 or -22.64/10 x = 0.26 or x = -2.26