Is 0.2 a root of the equation x^2 – 0.4 = 0? Justify. Is 0.2 a root of the equation x^2 – 0.4 = 0? Justify. November 23, 2020 Category: Chapter 4 - Quadratic Equations , Maths , NCERT Class 10 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related Write whether the following statements are true or false. Justify your answers. 1. Every quadratic equation has exactly one root. 2. Every quadratic equation has at least one real root. 3. Every quadratic equation has at least two roots.A wave is represented by the equation :y = 0.4 cos (8t - x/2), where x and y are in metres and t in seconds. The frequency of the wave isThe pH of a solution containing 0.4 M HCO−3 and 0.2 M CO2−3 is : [Ka1(H2CO3) = 4×10^−7, Ka2(HCO^−3) = 4 × 10^−11]
