# Sir pls explain me with steps all the tick mark sums Q. Factorize each of the following quadratic polynomials by using the method of completing the square: (1). ${p}^{2}+6p+8$ (2). ${q}^{2}-10q+21$ (3). $4{y}^{2}+12y+5$ (4). ${p}^{2}+6p-16$ (5). ${x}^{2}+12x+20$

Kindly refer the same link for part number 4.