1. x^2 + 7x  + 12 = 0

Asked by teacher_yourschool | 9th Jun, 2020, 01:13: PM

Expert Answer:

x+ 7x + 12 = 0
→ x+ 3x + 4x + 12 = 0
→ x (x + 3) + 4(x + 3) = 0
 (x + 3)(x + 4) = 0
→ (x + 3) = 0 or (x + 4) = 0
→ x = -3 or x = -4


Answered by Yasmeen Khan | 9th Jun, 2020, 02:10: PM