Find the value of a^3 + b^3 when a + b = 4, ab = 3?
- 28
- 24
- 26
- None of these
Explanation
Using the identity:
a³ + b³ = (a + b)³ - 3ab(a + b)
Given:
a + b = 4
ab = 3
Substitute the values:
a³ + b³ = (4)³ - 3(3)(4)
= 64 - 36
= 28
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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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