ICSE Class 10 Answered
8x2-22x-21=0,Quadratic equation
Asked by atanu.pal.1961 | 09 Apr, 2020, 06:21: PM
Expert Answer
8x2-22x-21=0
→ 8x2 - 28x + 6x – 21 = 0
→ 4x(2x - 7) + 3(2x – 7) = 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
→ x = -3/4 or x = 7/2
Answered by Yasmeen Khan | 09 Apr, 2020, 10:24: PM
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