From 2012-2016, the amount (in crores) spent on natural gas N and electricity E by Indian residents can be described by the following expressions, where t is the number of years since 2012.
Gas spending model,
N = 2.13t2−4.21t+37.40
Electricity spending model,
E = −0.209t2+5.393t+307.735
What is the total amount A spent on natural gas and electricity by Indian residents from 2012 to 2016?
STATEMENT - 1 : (x−2)(x+1) = (x−1)(x+3) is a quadratic equation.
STATEMENT - 2 : If p(x) is a quadratic polynomial, then p(x) = 0 is called a quadratic equation.