2x²+x-1=0 have real roots
Answers
Answered by
0
Answer:
Yes, 2x² + x - 1 have real roots
Step-by-step explanation:
2x² + x - 1 = 0
a = 2; b = 1; c = (-1)
D = b² - 4ac
= (1)² - 4×2×(-1)
= 1 + 8
= 9
As D > 0
Therefore 2x² + x - 1 have real roots
Similar questions