Question

If one root of the quadratic equation 2x + kr - 6 = 0 is 2, then the value of kis
a) 1
b. -1
c)0
d) -2​

Answer 1

your answer is 2

Every quadratic equation gives two values of the unknown variable and these values are called roots of the equation. Let ax2 + bx + c = 0 be a quadratic equation. If aα2 + bα + c = 0 then α is called a root of the quadratic equation ax2 + bx + c = 0.

Answer 2

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Answer in the attachment