Question

SECTION - B
[2 x 6 = 12]
Q21. For what value of k, -4 is a zero of the polynomial
x2-x- (2k + 2)?
Q22. Find the values of m so that the quadratic equation
mx(x - 7) + 49 = 0 has two equal roots.
Q23. Prove that V5+ V3 is irrational.
Q24. In a flower bed, there are 23 rose plants in the first row, 21 in the
second, 19 in the third, and so on. There are 5 rose plants in the
last row. How many rows are there in the flower bed?
Q25. Find the HCF of 225 and 867 by prime factorisation method.
Q26. Find the ratio in which the y-axis divides the line segment joining
the points (5,-6) and (-1,-4). Also find the point of intersection.​

Answer 1

Answer:

O and 1 are called digits