Question

Write all the values of k for which the quadratic equation 2 X square + X - 3 is equal to zero has real roots

Answer 1

Answer:

> +8

Step-by-step explanation:

JUST SEE CARE FULLY:-

2x² + kx + 8 = 0 compare this

2x² + kx + 8 = 0 compare thisquadratic equation with ax²+bx +c = 0

a = 2 , b = k , c = 8

a = 2 , b = k , c = 8It is given that , the equation has real roots

SO, Discreaminant = D ≥ 0

=>b² - 4ac ≥ 0

=>k² - 4 × 2 × 8 ≥ 0

=>k² ≥ 64

=>k ≥ ± √64

=>k ≥ ± 8 #YOUR ANSWER

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