Question

what do you mean by the given equation has real and equal roots according to chapter 4 quadratic equations of class 10th NCERT

Answer 1

It means that the given equation must have equal roots and D=0. Also, we can say that the equation must be in the form of
${x}^{2} + {y}^{2} + 2xy \: or \: {(x + y)}^{2}$