Advertisements
Advertisements
प्रश्न
Expand (5 − x)3
योग
उत्तर
(5 − x)3
Comparing (5 – x)3 with (a – b)3 we have a = 5 and b = x
(a – b)3 = a3 – 3a2b + 3ab2 – b3
(5 – x)3 = 53 – 3(5)2(x) + 3(5)(x2) – x3
= 125 – 3(25)(x) + 15x2 – x3
= 125 – 75x + 15x2 – x3
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
