Q2 of 65 Page 145

If then the value of a3 + b3 is

The given equation on LCM reduces to:


a2 + b2 = ab


Also we know that,


a3 + b3 = (a + b)(a2 + b2 – ab)


On substituting the value of a2 + b2 in above equation, we get,


⇒ (a + b) (ab – ab)


⇒ 0

More from this chapter

All 65 →
1

Let us factorise the following algebraic expressions:

(x2 – x) y2 + y – (x2 + x)

 2

If a2 – b2 = 11 × 9 and a & b are positive integers (a>b) then

 2

The value of 253 – 753 + 503 + 3 × 25 × 75 × 50 is

 2

If a + b + c = 0, then the value of is