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प्रश्न
Expand.
(3x + 4y − 5p)2
योग
उत्तर
It is known that,
(a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ca
(3x + 4y − 5p)2
= (3x)2 + (4y)2 + (−5p)2 + 2(3x)(4y) + 2(4y)(−5p) + 2(−5p)(3x)
= 9x2 + 16y2 + 25p2 + 24xy − 40yp − 30px
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
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