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If `x= - 5 ` is a root of the quadratic equation `kx^(2) + 13x - 10 = 0 `, then complete the following activity to find the value of k . |
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Answer» Activity `:` One root of the quadratic equation `kx^(2) + 3x - 10 = 0 ` is -5. Substitute `x= - 5 ` in the equation . `:. K ( - 5)^(2) + 13( - 5) - 10 = 0 ` `:. 25k - 65 - 10 = 0 ` `:. 25 k = 75 ` `:. K = ( 75)/( 25) = 3 ` The value of k is 3. |
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