Start learning →

$a^3 - b^3$ ର ଉତ୍ପାଦକୀକରଣ କରନ୍ତୁ।

A$(a-b)(a^2 - ab + b^2)$
B$(a-b)(a^2 + 2ab + b^2)$
C$(a-b)(a^2 + ab + b^2)$
D$(a-b)^3$
Answer & Solution
Correct answer: C. $(a-b)(a^2 + ab + b^2)$
ଘନଫଳର ଅନ୍ତର ସୂତ୍ର (difference-of-cubes identity) ହେଉଛି $a^3-b^3=(a-b)(a^2+ab+b^2)$। ତେଣୁ ବିକଳ୍ପ C ସଠିକ୍। ବିକଳ୍ପ A ରେ $ab$ ଉପରେ ଭୁଲ୍ ଚିହ୍ନ ରହିଛି, ଏବଂ ବିକଳ୍ପ B ରେ $ab$ ସହିତ ଭୁଲ୍ ସହଗ $2$ ରହିଛି।
Practise this question with Quill — RRB NTPC →

Keep practising Elementary Algebra

Browse all Elementary Algebra questions for RRB NTPC, or explore more Quantitative Reasoning topics.

Start a Elementary Algebra lesson →
Related questions
If $a + b + c = 6$ and $a^2 + b^2 + c^2 = 14$, find $ab + bc + ca$.If $x + \dfrac{1}{x} = 5$, find $x^3 + \dfrac{1}{x^3}$.If $a + b + c = 0$, what is the value of $a^3 + b^3 + c^3$?Expand $(x + 5)^2$.If $a + b = 7$ and $a - b = 3$, what is $a^2 - b^2$?