Question

Find 'k' if the given eqn have two equal roots 2x2 + kx+3=0​

Answer 1

2×2=4

the root is 4+3= 7 that is the answer

Answer 2

Answer:

we have to find the values of k for quadratic equations 2x² + kx + 3 = 0 so that they have two equal roots.

we know, quadratic equation will be equal only when

discriminant, D = b² - 4ac = 0

on comparing 2x² + kx + 3 =0 with general form of quadratic equation, ax² + bx + c = 0 we get, a = 2, b = k and c = 3

so Discriminant, D = (k)² - 4(2)(3) = 0

or, k²-24=

or, k = ± √24 = +2√6

hence, the value of k = 2√6 or -2√6

Step-by-step explanation:

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