if the roots of the equation x^2 +ax+b=0 are non real then show that the value of a^2 - 4b - 1 is always negative

What is a binomial expression?

Can we divide two vectors? If this is possible then how?

How do you write “the product of 18 and q” as an algebraic expression?

दहावीच्या आय सी एस इ विद्यार्थ्यांनी पुढे काय करायला पाहिजे

Find the least number of square tiles by which the floor of a room of dimensions 16.58 m and 8.32 m can be covered completely. why HCF and not LCM as “least” keywor dis given?