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प्रश्न
(p + q)(p2 – pq + q2) is equal to _____________
पर्याय
p3 + q3
(p + q)3
p3 – q3
(p – q)3
उत्तर
p3 + q3
Explanation;
Hint:
a3 + b3 = (a + b)(a2 – ab + b2)
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