Find the value of k if the roots of x² - 7x + k = 0?
- 12
- 10
- 7
- None of these
Explanation
Given the quadratic equation:
x² - 7x + k = 0
Using the sum and product of roots formula:
Sum of roots: α + β = -b/a = 7/1 = 7
Product of roots: αβ = c/a = k/1 = k
So, the value of 𝑘 is the product of the roots, which is:
𝑘 = 12
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اس سوال کو وضاحت کے ساتھ پڑھیں
- (t² + 4)(t - 2)(t - 2)
- (t² - 4)(t² - 4)
- (t² + 4)(t + 2)(t - 2)
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- +4
- -4
- +16
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
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