8x2-22x-21=0,Quadratic equation

Asked by atanu.pal.1961 | 9th Apr, 2020, 06:21: PM

Expert Answer:

8x2-22x-21=0
→ 8x2 - 28x + 6x – 21 = 0
4x(2x - 7) + 3(2x – 7) = 0
(2x – 7)(4x + 3) = 0
(4x+3) = 0 or (2x – 7) = 0
→ x = -3/4 or x = 7/2

Answered by Yasmeen Khan | 9th Apr, 2020, 10:24: PM