Q11 of 108 Page 46

If LCM of expressions 6x2y4 and 10xy2 is 30x2y4 then HCF will be:

Let u(x) = 2 × 3 × x2 × y4

Let v(x) = 2 × 5 x × x × y2


So by comparing u(x) and v(x), HCF = 2xy2 [Least power of variables and common terms]


So the correct answer is B [2xy2].

More from this chapter

All 108 →
9

The HCF of expression 8a2b2c and 20ab3c2 is:

 10

The LCM of expressions x2 – 1 and x2 +2x + 1 is :

 12

Write Shridharacharya Formula of finding the roots of the quadratic equation ax2 + bx + c = 0.

 13

Writing the general form of the discriminant of the equation ax2 + by + c = 0 explain the nature of the roots.